Since you apparently like my rhetorical skills, how about some extra rhetorical questions?
Please tell me how I can test prior to buying this and check for potential incompatibilities? How can potential buyer know about issues if not by reading what other people with "poor system administration" skills experienced with a product that is apparently so poor in terms of code quality?
I have everything up and running (I had backups of everything) so for the moment I am quite okay. I am absolutely not upset at all. This is your interpretation.
Ah, and before you hit the keyboard: keep in mind that rhetorical questions are not meant to be answered...