How to make meld prefer an SVN diff over a CVS diff

We have some directories that are tracked in both CVS and SVN (lo开发者_StackOverflowooong story). When I change a file in one of these and run meld it diffs it against the SVN version. However for some of the other developers it diffs against CVS. Is there a way to specify which one gets priority? Everyone is using Meld 1.3.0

edit: Ok, I see now that there is an option on the address bar in the directory view to select however some of the machines don't have that bar.

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This has been fixed in Meld. See the related bug.

Anyway, this sounds like a configuration issue. In the current released version of Meld (1.5.1), there's an drop-down-menu item in the ui to select the version control system.