I'll send you a new small compiler component to test the fix. We have tested it on your .png file.

It's caused by this:

FIX : [SB#8-01151] Installer: Under certain circumstances, a possible silent buffer overrun resulted in an incorrect output if the compressed data size was between 65533 and 65535 bytes.

This issue is there since the first release of SetupBuilder 5 in 2005.