Your anti-virus program is detecting the tweaker program as a virus. This is a common issue.
Disable your anti-virus software or add an exception that stops it checking the gp4 tweaker files.
I'll post a "pre-tweakered" version of GP4.exe on Central so people can avoid this issue.
Edit: Done. See
GP4 Central.
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Intel NUC 8i3, 8GB RAM, MS Sidewinder Wheel
Edited 1 time(s). Last edit at 12/06/2013 12:17AM by TomMK.