Illustrator patch version 19.0.1 fixes critical bugs that cause errors or crashes in Illustrator CC 2015 (version 19.0.0, June 2015).
Important: If you have installed Illustrator CC 2015, and an update is available in the Adobe Creative Cloud desktop app, choose to click Update to receive several crucial / critical bug fixes.
Illustrator CC 2015 crashed when using the Save for Web dialog. This bug has been fixed.
If the SVG or SVGZ files were saved with the Multiple Artboards option checked, when the files were opened the next time, they appeared blank. This bug has been fixed.
Illustrator CC 2015 crashes on attempting to save legacy documents. This bug has been fixed.
Some files take a long while to open. Once this fix (version 19.0.1) is applied, copy and save the contents of the file into a new file. Continue working on the new file.
The following errors have been fixed for GPU-related issues:
Users could not change the resolution of files created in Adobe Line CC and then sent to Illustrator. This issue has now been fixed.