Unfortunately, there is a bug in the recent Razuna 1.4.3 release when you deploy it on Windows (7 and 2003/2008). The bug currently prevents you from uploading any images and might also affect video loading.
We are currently working on the fix and will issue a hot fix asap. For those affected you can follow the bug report over at http://issues.razuna.com/browse/RAZ-764. If you subscribe to the report you will be automatically notified once the hot fix is available.
We know this is troublesome and we deeply apologize for it.
If you deploy on MacOS X and Linux you are not affected by this bug.

