EB acting strange, and vanilla RTW not working at all

[Ludens]

But why has the programme suddenly changed to "minimal UI"? And how do I change it back?

Many players prefer the minimal UI for battles - although I am not sure if EB changes this by default. Either way, you can change it easily. Do you use the little script menu to start EB? There should be an option to for minimal UI there. If there isn't, or when you don't use the menu, you can change it in the preferences.txt file (the one in the preferences folder, not the one in the main R:TW folder).

I am currently doing a complete re-install of RTW and of EB, as even a system restore to before the strangeness, and a change of the RTW to "trusted" in Kaspersky has not fixed the problem.

As for the possibility of it being a genuine threat that has been detected...if Kaspersky's solution kills the game (and it does), then what am I meant to do? I suppose I could have a dodgy version of the RTW 1.3 or 1.5 updates, or of EB, but I got them from mainstream sources recommended on forums like this one, or on the official RTW or EB sites.

It could be that the file was infected after install, or something. Let us know if the reinstall of R:TW and EB works.