Studio 2015 SR2 used to work fine on my windows 10 (x64). However, after an operation system reset, that *team spirit* seems to have evaporated. Tried re-installing the Studio but to no effect at all. The symptoms discovered so far (there might be more) are as below:

1. No file-based TM can be added

Error message: "The current parameters are not compatible with the Translation Provider Uri Schema"> This happens whenever I try to load or open a file-based TM. Tried the "Add Any TM" option, same error message. However, Legacy TMs can be opened & upgraded, though.

2. No project can be opened

Error message: "An error occured whilst trying to determine the file version". This even happens to newly created projects, so it cannot be indeed a compatibility issue.

3. Software update acting wild

Made a few attempts in a row to update the software, but only got a few very inconsistent results: the software may randomly report that "Already up-to-date", Update server not found, Update error (some very lengthy message that makes no sense at all), "Some update files have already been download, download again?" (regardless of whether I choose to re-download or skip the files, the update is always reported to be Successful).

These are pretty much all. Please help.