: Some "patched" or modified versions of QPST contain files that security software mistakenly flags as threats. Temporarily disable your antivirus or Windows Defender before extracting and installing the software.
Some patched QPST distributions require a . If you mix a patched QPST Server.exe with original files, you get the PNG error. qpst serverpng file is missing patched
You are using a modified version of QPST (intended to bypass certain restrictions) that wasn't packaged correctly. Step-by-Step Fixes 1. Disable Antivirus and Re-extract : Some "patched" or modified versions of QPST