Nils: In order for your system to correctly recognize to running copies of mIRC, you have to install them separtely(sp?). Installing one to a folder (which you can specify), then copying the information to another folder, and then changing the files inside the folder for your bot (as an example) will not always work. I don't know why, but I do know that I had that problem until I did a dual installation of mIRC, one to my main folder (for my client), and one to my bots folder. Additionally, I found that there can also be problems if the second installation is off of the first installation folder, so what I did was the first installation to c:\mIRC, then the 2nd installation to c:\mIRCbot
Since then I've had no problems with running a bot and my own client on the same system, BTW: I've now been running a bot for nearly a year with this configuration.