Bug 375717

See apparently related Bug 226344 for Linux environments.  For Windows this is even worse if '/tmp/' is used literally without some hidden translation magic: Kdenlive functions expecting to create or access temp files or dirs will fail. In Windows land this default should be expressed in Windows terms:

%USERPROFILE%/something where %USERPROFILE% gives the current user home dir, or

%APPDATA%/Local/Kdenlive/tmp which would give a standard practice location for a temp dir under %USERPROFILE%, etc.

See https://technet.microsoft.com/en-us/library/dd560744(v=ws.10).aspx for standard Windows env vars that can be used for constructing various reasonable default paths for Kdenlive out-of-the-box for Windows.

Note I am accepting that right-slash POSIX path notation used elsewhere in the GUI will be translated for Windows use though this will confuse Widows-only users.