When for some reason the 'tmp’ directory is not in the .svn directory the Studio Pro commit will fail with:
SharpSvn.SvnSystemException: Commit failed (details follow): ---> SharpSvn.SvnSystemException: Unable to create pristine install stream ---> SharpSvn.SvnSystemException: Het systeem kan het opgegeven pad niet vinden.
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bij SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, SvnException error, Object targets)
bij SharpSvn.SvnClient.Commit(ICollection`1 paths, SvnCommitArgs args, SvnCommitResult& result)
bij Mendix.Modeler.VersionControl.Operations.Svn.SvnCommitOperation.Execute(CommitRequest request) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\Operations\Svn\SvnCommitOperation.cs:regel 43
The solution is to create this directory by hand but I suggest this is checked and done by Studio Pro
https://stackoverflow.com/questions/35962861/how-to-fix-unable-to-create-pristine-install-stream