It sounds like your PC having an issue, i can't use replays in SOL anymore as i have the same problem but X is able to without problems and it sounds like the same exact problem for you in SAiVC.
Post your PC stats and uh.. I'll talk to some PC knowledgable friends of mine n see if i can work out a fix.. because back to SOL..
The 2005 SOL's reps would work ever 1/10 and the dev version i got before the one i currently have worked every time without fail but the current one just causes me to crash so i think it's something to do with the PC not handling the game properly but I'm not tooo sure.