Notes about the SPU file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The SPU file type is primarily associated with 'Spectrum 512'.
Detailed information for file extension SPU:
Primary association: Spectrum 512
Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.
To view technical data on file-extension SPU click this link
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System Info for File Extension .SPU
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly
from user systems.
ProgramID: GraphicsConverterPro.spu, FileType: Spectrum 512, AppName: GraphicsConverter-reg
EXEFile: %ProgramFiles%\XnView\xnview.exe %1