Flash Builder 4.0.1 known issues and bugs

Adobe Flash Builder 4 known issues and bugs

Welcome to Adobe® Flash® Builder™ 4. This document contains known issues and troubleshooting tips not covered in the Flash Builder documentation.

Please refer to http://www.adobe.com/go/flex4_sdk_releasenotes for Flex 4 SDK known issues 

AIR: Project

FB-25251 Can't install AIR file exported from Builder - "Air file is damaged" error when previous version of AIR application is installed

Workaround: Uninstall previous version of the AIR application


FB-16779 Flash Player error may occur when debugging in Google Chrome

FB-25724Installed Adobe Flash Player Is Not a Debugger when Flash Pro CS5 is installed and using the standalone player (no HTML wrapper)

Workaround:Uninstall your current Flash Player and run the debugger player installer found atINSTALL_DIRECTORY/players/.  For the standalone Flash Player, launch the Stand Alone Flash Player found in INSTALL_DIRECTORY/players/ and open a swf to re-associate that version of the standalone Player

FB-24607 When debugging in Internet Explorer 8 on Windows 7, Internet Explorer may display a dialog when your Flash application has halted at a breakpoint. This is caused by the fact that Internet Explorer thinks the Flash Player is hung, when in fact the Flash Player is simply waiting for a message from the Flash Builder debugger.

Workaround: You can disable this Internet Explorer warning by making a change to the Windows registry. (Note, this change will affect all Internet Explorer windows, not just ones being used to debug Flash Builder applications.) 

- Run regedit.exe 

- Navigate to the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main 

- Edit > New > DWORD (32-bit) Value 

- For the name of the new value, type "HangResistance" 

- The value in the right-hand column will show up as zero; leave it with that value. .

FB-26960 Google Chrome 5.0 has an bundled Flash Player which is given preference over the debug flashPlayer bundled with FB preventing debugging

Workaround: The default Flash Player can be manually changed to the debug version. For more details visit kb2.adobe.com/cps/839/cpsid_83950.html

ASDoc – Display

FB-25623 No ASDoc for unsupported locales in plug in build using non bundled eclipse distros

Adobe Community Help

FB-26153  Context-sensitive help for ActionScript Language Reference is not displayed on first invocation. 


Windows: Select Adobe Community Help > Edit > Preferences.  Then select Local Content > ActionScript 3.0 Reference and click the update button. 

OS X: Launch Adobe Help > Preferences.  Then select Local Content > ActionScript 3.0 Reference and click the update button. 


FB-26001Incremental compiler fails to pick up metadata changes. Fix is scheduled for SDK 4.1.  Workaround: Perform a full compile.

SDK-25619 Embedding font in a library throws compile time error. Fix is scheduled for SDK 4.1.

FB-25787 Cannot use the -static-rsls option in "Additional compiler arguments" input

Workaround:In the project's properties dialog, go to "Flex Build Path" and choose "Merged into code".

FB-24955 Compile error when a package named 'style' contains a CSS file that's referenced by an MXML file in the same package as CSS

Workaround:Rename the the 'style' sub-package to something else, and there's no error.

Design View

FB-15811 Embedded assets aren’t recompiled if they haven't changed since th­­­e last time you launched Flash Builder

Design View – CSS

CSS Design View is no longer available for Flex SDK 4 projects

Flash Professional Project workflow

Flash Professional must be launch prior to initiating a run or debug session from Flash Builder

Class Wizard has empty Super class and Interface dialogs when invoked from Flash Professional


FB-21960 FB Plug-in doesn't launch on certain machines

Workaround: in eclipse.ini file, change the memory allocation to;



FB-26159 Uninstalling ColdFusion Builder deletes the Flash Builder RDS plugin. Workaround: Close ColdFusion Builder perspectives prior to uninstall or reinstall Flash Builder.

FB-26047 unable to install FB Plug-in into external eclipse 3.4.2 when language pack is not installed (Japanese Only)

Workaround: Install the Japanese Eclipse language pack.

FB-15844 FB Plug-in not supported on eclipse3.5 cocoa on mac

FB-25217 Flash Builder installation not supported on Windows OSs where the user name has 4-byte characters.

FB-26959 FB 4.0.1 PL installer installs earlier version of FB, if temp folder isn't cleaned up after earlier install. This issue is Windows only.

Workaround: During installation, files are extracted to a temp folder. Files are not getting overwritten in the temp folder. So delete the folder "Adobe Flash Builder 4 Plugin" , if present, from the location given below before installing new plug-in version

  • "C:\users\<username>\AppData\Local\Temp" in case of Windows 7\Vista
  • "C:\Documents and Settings\<username>\Local Setttings\Temp" for Windows XP

FB-26443 FB plugin is not compatible with 64 bit JVM.

Workaround: 64bit JVM can be used in 32 bit mode by adding -d32 to the vmargs in the eclipse.ini file, or use the shortcut written to the install folder named "Run Adobe Flash Builder 4 Plug-in with alternate Eclipse". This shortcut already uses a launcher arg for our bundled JRE (which is 32 bit), allowing you to launch your own copy of eclipse(eclipse has to be 32 bit) with the compatible JRE version, instead of using the system default JRE

Project Definition

FB-12261 project that contains modules, and uses -resource-bundle-list compiler option do not list any bundle names derived from [ResourceBundle()] metadata tag

Workaround: if you build large project with many modules, edit the .actionScriptProperties file and comment the modules, build the <modules /> to generate the bundles.txt. copy the bundles.txt to other location and uncomment the modules to compile the whole project without overwriting the bundles.txt. Everytime you add resourcebundle, you have to repeat this process

Project: Import/Export

FB-26119 FXP import does not update source path when using linked folders

Workaround:Fix .actionScriptProperties file manually or re-add the source path in the project properties UI. For a consumer of a new FXPL, this isn't obvious.


FB-25769 ASDoc is not updated when using refactor>rename and rename textual matches is checked


FB-11184 If you experience crashes while embedding fonts in CSS design view, then try embedding the font using a URL to the ttf file instead of using the system font name.

FB-19591  No way to set the background color for Spark containers or app in the main PI

FB-16144  Build times can be long for projects containing many modules

FB-23727 Flash Builder intermittently hangs while opening projects.


  1. Exit Flash Builder
  2. Edit INSTALL_DIRECTORY/plugins/com.adobe.flexide.editorcore_4.0.0.272416/.options
  3. Set the value of com.adobe.flexide.editorcore/registerCodeModelProjectsAsynchronously to true
  4. Re-launch Flash Builder

FB-23023 Line numbers wont scroll along with the rest of the text and breakpoints etc wont show up in the AS editor if on secondary screen

Workaround:Update and patch information here http://blogs.adobe.com/jasonsj/2010/02/patch_for_snow_leopard_line_number_scrolling_bug.html. 

Eclipse Update Site Mechanism (P2)

  • In order to install additional plug ins on OS X and Windows XP, you need to be logged in to a user account with Administrator privileges.
  • In order to install additional plug ins on Windows Vista and Windows 7, you must launch Flash Builder via the “Run as Administrator” context menu option and authenticate if prompted

If you are installing ColdFusion Builder or the LCDS Modeler plug ins, you will need to run Flash Builder once using a user account that is in the Administrator group on OS X or XP or with “Run As Administrator” on Windows Vista and Windows 7.

Flex Unit

FB-25586  FlexUnit fails to compile if locale is not support by Flex SDKWorkaround:Set the –locale to en_US

Network Monitor 

FB-23419 Suspend on startup will not suspend the network calls 

FB-25589 Network monitor on - not able to make requests 

FB-26178 Data returned containing non-English characters breaks the Network Monitor only for Zend-AMF responses


FB-23384 Loitering Objects Show Zero Object References

FB-23543 Safari browser crashes running profiler for the second time

FB-25184 Profiler does not show back references in AIR  

Third Party IDE Compatibility

FB-19703 Unable to install Flash Builder plug-in properly into Zend Studio 6.1.2 standalone. The recommended workaround is to install the Flash Builder plug-in into the All-In-One Eclipse PDT + Zend Debugger Plug-in (http://www.zend.com/en/community/pdt). An alternate workaround (not recommended) is to rename the “dropins” folder to “links” and restart Zend. 

FB-24434 [Zend Studio on Mac] Unable to install Flash Builder plugin properly into Zend Studio 7.1. The recommended workaround is to install Zend as a plugin into Eclipse 3.5.1 or higher, then install FB as a plugin into the same host Eclipse.

FB-24518 [SAP CE NWDS 7.1.1 SP1] Unable to access FB features after installing FB Plugin

FB-23339 Install Flash Builder using Eclipse from Aptana, Flash Builder features are not available in Aptana

Workaround: Use Aptana 1.4 update site with FB 3.4 plugin and 1.5 update site with FB 3.5 plugin


FB-23878 Duplicate Entity name with different package name not handled across DCD 

Workaround : When two entities with the same name are used, entity collision will occur at the client side code generation. Thus Entities should have different name in the server code



FB-22755 Cannot use update method which has changes - public void updatePerson3Params(Person person, Person prev, ArrayList changes)

FB-26029 Data Services creates collision of class names from BlazeDS/Java. When two entities with the same name are used, entity collision will occur at the client side code generation.

FB-26522 [LCDS] Service explorer gets corrupted after uninstalling fiber modeler plugins from Flash builder. The recommended workaround is to use the FB 401 updater, configure the server to LCDS 3.1 with fiber modeler 102 plugins and then deploy the fml (created using FB 4) 

DCD: PHP Introspector          

FB‐19657 Optional arguments not displayed after introspection

FB-19046 PHP Introspector can fail when authentication is enabled on the web server (like IIS)

DCD:  Configure Return Type

FB-22805 Auto guess not working when service is created using Generate a Sample link

FB-24640 : [WSDL] Configure Return Type and Test Operation for WebServices is not allowing Date input format

DCD: Fiber Integration

FB-26849: Fiber locale variable resolves to a non-existing path. This error occurs only if locale is set to anything other than en_US, ja_JP, de_DE, fr_FR, zh_CN and ru_RU


Step 1: Open a terminal window, change current directory to INSTALLDIR/plugins/com.adobe.flexbuilder.dcrad.nl1_4.0.1.xxxxxx/. 

Step 2: If you are using Flex SDK 4 execute 'CreateSWCs.bat xy_XY' on Windows  or 'CreateSWCs.sh xy_XY' on Mac. If you are using Flex SDK 3.5 execute 'CreateSWCs.bat xy_XY 3.5' on Windows or 'CreateSWCs.sh xy_XY 3.5' on Mac.

DCD: Service Wizard

FB-24162: [SDK][Dependent][Static XML] RTE occurs as auto CRT incorrectly parses xmls with empty data type

Flex Automation

FLEXENT-792: Very low level of control on the pointing hand movements if you use object spy and move over Flex components in an Air application

GB18030 support for Windows XP

In order to support the display of all characters of the Chinese standard GB18030 on Windows XP systems, Adobe recommends the installation of the Microsoft GB18030 Support Package. This support package will update an XP system with, among other things, fonts and input-method-editors (IMEs) to correctly support GB18030. The support package is available as a download from the Microsoft website. 

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