[SOLVED] Qt Creator : Auto-detected debugger in tool chains has a wrong path

Hi! First time I’m posting, so I hope this question’s in the good forum.

I’m having trouble debugging with Qt Creator. When I hit F5, I get the following error :

Adapter start failed
The gdb process failed to start. Either the invoked program ‘C:/QtSDK’ is missing, or you may have insufficient permissions to invoke the program.

I googled this error, and found a lot of different solutions, more than often involving old or misconfigured QtCreator.ini. I tried them all to no avail.

Then, I noticed the following problem in “Tools->Options…>Build And Run>Tool Chains” :

The auto-detected debugger is “C:\QtSDK”, which is probably why I’m getting this error message. I can’t edit this entry, and I don’t know how to make it auto-detect the debugger correctly.

OS : Windows XP SP3 32 bits.
Version : Qt Creator 2.4.0 based on Qt 4.7.4 (32 bits)

Thanks a lot in advance for your help!