Deleting modules in a multi-developer project is known to be slow. Performance is one of the reasons why we started working on the new version control feature. Anyway, for now you can use one of the following workarounds:
- Wait longer :-) What is happening is that all objects in all documents in the module are being deleted from the database and this takes a while. It is not hanging, it is just slow.
- Export the project to a local file. Do the operation there and upload the project again. This might be faster than doing all the deletes. If you do this, make sure you are the only one working on the project!
We're sorry for the inconvenience and promise you it will be much better in version 3.0.