when I run the installer, it asks the language and then complains that I have to stop any running copies of tkabber. But I never had tkabber n that computer! No need to mention that I've checked the task manager - just for a case.
I guess the installer dislikes Psi as when I quitted from Psi - Tkabber-Pack continued.
The NSIS script used for Tkab
The NSIS script used for Tkabber-Pack is a modified version of the NSIS script used for the Psi installer. The Psi installer have the 'Psi running copy' detection that you say. I forgot to remove it, and now Tkabber-Pack detects Psi running copies. Quite disturbing, eh?
Of course the next Tkabber-Pack will have this bug corrected, thanks.