If the patch states a server file is missing, the underlying COM component might just be unregistered within the Windows sub-system.
Communication gaps between the PC and the phone's COM port can sometimes force QPST to throw generic file-missing errors. Download the latest drivers. qpst serverpng file is missing patched
QPST 2.7.477 - Readme - GitHub Gist
Here are the most effective methods to resolve this error, ordered from easiest to most advanced. 1. The "Dummy File" Workaround (Quickest Fix) If the patch states a server file is