dogged by bad luck

Hiho, my friends!
Two days ago my computer became a victim of a heavy virus attack. So I had to delete all of my harddrives and had to install everything new. Now Blender is added new and all plugins too for sure.
After exporting my recovered age some things have changed:
Some alpha blended textures aren't drawn correct now. The crossover between two textures doesn't look transparent mostly. (have a look to the added picture). It doesn't happen everywhere, but there are only some few that become drawn correct. It looks like a usual Zoffs error, but I don't know why it happens now, because there haven't been done any changes in blender.
Secondly my waveset doesn't look as I have created it in the past. Now it's kind of silver and very reflective. Formerly it was dark blue.
Have there been any changes in the gow plugin wihin the last four weeks that could cause these errors? Because I don't know what could cause it. I have installed the same drivers and software to my computer as before.
I'm a bit at a loss.
Two days ago my computer became a victim of a heavy virus attack. So I had to delete all of my harddrives and had to install everything new. Now Blender is added new and all plugins too for sure.
After exporting my recovered age some things have changed:
Some alpha blended textures aren't drawn correct now. The crossover between two textures doesn't look transparent mostly. (have a look to the added picture). It doesn't happen everywhere, but there are only some few that become drawn correct. It looks like a usual Zoffs error, but I don't know why it happens now, because there haven't been done any changes in blender.
Secondly my waveset doesn't look as I have created it in the past. Now it's kind of silver and very reflective. Formerly it was dark blue.

Have there been any changes in the gow plugin wihin the last four weeks that could cause these errors? Because I don't know what could cause it. I have installed the same drivers and software to my computer as before.

I'm a bit at a loss.