Prob with dropdox probably comes in when Drop Box tries to update the file while Scrinver has it open. This could easily happen if ..
1) More then one person is using the same file at around the same ball park times
2) One or more local repos falls behind in sync due to network congestion or other issues.
I use dropbox with everything from MS word, to iBank, to Photoshop, to whatever.
Works great. I even have Scrinver in it now.