If the version you are using (usually PSX2PSP.exe ) won't open, try running the version (often named Classic.exe or found in a subfolder). It lacks the fancy interface but is much more stable on modern systems. 6. Antivirus Interference

Some antivirus software flags older, niche tools like this as "Unknown Software."

: This is a legacy ActiveX control file. If it is missing, the program will often crash or throw an error on startup.

: Avoid running the app from protected system folders (like Program Files ). Move the entire PSX2PSP folder to a simpler directory like C:\PSX2PSP\ to avoid permission errors. 2. Converted Game Cannot Open on PSP/Vita