If you have problems that Logic detects the Audiounit you can run the AU validation also manually.
Registering the 32 bit AU version of Gladiator:
1) Open the Terminal
2) Enter: "auval -v aumu T2GL TON2"
Registering the 64 bit AU version of Gladiator:
1) Open the Terminal
2) Enter "auval -64 -v aumu T2GL TON2"
The AU validation should now report a pass.
If it returns an error your installation is corrupt.
Fixing a corrupt installation:
1) Close your host software (Logic) completely!
2) Go to Library/Audio/Plug-Ins/Components and delete Gladiator.component
3) Run the installer of Gladiator
4) The AU validation should now pass