I downloaded new version 1.7 and my software will not open. Please help
There have been many posts about this problem already (about once a day at least). Use the search function. You need to update/remove some Microsoft Redistributable packages. The links are in the posts you will find.
The easiest thing would be to grab the 1.7.01 Release Candidate 2, which has the fix in it for this issue. You can find that here: