You can receive a PostScript error when sending a file to a PostScript interpreter (for example, a printer, Acrobat Distiller). A PostScript error occurs when the PostScript interpreter can't read the file's PostScript code. An error can also occur if the file's PostScript code exceeds one or more of the limits in the PostScript page description language. If your PostScript interpreter appears to process data but then stops, a PostScript error could have occurred.
A PostScript error message includes a PostScript error type, which defines the type of error it is. It also includes an offending command, which usually indicates the specific part of the PostScript code that the interpreter couldn't read. The offending command usually indicates the command that caused the problem. Some PostScript errors point you right to the cause of the problem, and some get you looking in the right direction.
Example of a PostScript error:
%%[Error: ; OffendingCommand: ]%%
For example, the PostScript error %%[Error: dictfull; OffendingCommand: def ]%% contains the PostScript error type "dictfull" and the offending command "def." The error type indicates that the dictionary contains the maximum number of entries. The offending command is the last command the PostScript interpreter tried to process, "def," which defines a new word in the dictionary.