Several years ago I upgraded to Girlfriend 1.0 from Drinking Mates 4.2, which I'd used for years without any trouble. However, there are apparently conflicts between these two products and the only solution for system stability was to try to run Girlfriend 1.0 with the sound turned off.
To make matters worse, Girlfriend 1.0 is also incompatible with several other of my favourite applications, such as Lads' Night Out 3.1 and Geeking 6.1. I tried a temporary uninstall of all Girlfriend utilities to test the capability (on the advice of a friend) of a popular shareware beta-program, Party Girl 2.1 - which though highly functional, had many bugs.
Eventually I tried to run Girlfriend 1.2 and Girlfriend 1.0 at the same time, only to discover terrifying system conflict when these two systems detected each other, resulting in severe damage being caused to all my hardware. Sensing a way out, I got an expensive diamondware patch to upgrade one of the conflicting applications to Fiancee 1.0, only to discover that this product has to be soon
further upgraded to Wife 1.0....