Actually, "supermium_uao.exe" won't launch under XP SP3 (32-bit) because of two missing functions on XP's kernel32 system file:
# Report By YY.Depends.Analyzer (Target:5.1.2600-x86)
## kernel32.dll
* [ ] InitializeCriticalSectionEx
- Supported OS: 6.0.6000, 6.1.7600, 6.2.9200, 6.3.9600, 10.0.10240
- Ref Module: supermium_uao.exe
* [ ] LCMapStringEx
- Supported OS: 6.0.6000, 6.1.7600, 6.2.9200, 6.3.9600, 10.0.10240
- Ref Module: supermium_uao.exe
Above is a log acquired via the YY-Thunks CLI tool; the command I used was:
YY.Depends.Analyzer "supermium_uao.exe" /IgnoreReady /ReportView:CheckBox /Target:5.1.2600
As @mjd79 suggested (), if you redirect the kernel32.dll function calls to Supermium's wrapper DLL "pwrp_k32.dll", you'll be able to make the executable XP-compatible ...