Problem #1. Stata update used to work, but now when it relaunches nothing happens.

Problem #2. Stata does not allow me to drag and drop files onto it like it did previously. For example, previously I could drop .do files and they would open. A related point to this, has anyone succesfully managed to associate .do files with Stata in Windows and have them open with it by double clicking? When I try at the minute, Stata opens as normal, but the .do file doesn't actually show or anything.

Many thanks
Dan