I’d suggest backing up your entire system before doing anything about this as dll changes may break your system. That said can you post the exact error message you are getting and tell us which Windows and Fritzing version you are running? I’d suggest trying the latest Fritzing version (0.9.4) which was released a couple of months ago, although I don’t think it is likely to fix this problem (which is a Windows issue rather than Fritzing.) It may be that just loading the C runtime library files (which is relatively safe) will fix the problem, the issue described here is unusual and with Windows 10 one of the updates fixed most of the problems.
Peter