They're all 14.x--I ran into issues with that in an earlier version of the application and came across a post you'd made saying they don't mix, so I was careful about that. 
The file version for crpe32.dll in that location is 13.0.6.1027. This is the same both on my machine (where I'm compiling the code from) and on the web server. I'm not sure if the BI 4.X installation occurred after I had installed 13.x and didn't replace the older copy correctly or if there's some other reason for this. If there's a 14.x version I can replace that with, I'd be happy to try that.