Excel 2013 Issues (can't open files directly)

So I recently installed Windows 8 and Office 2007 (including Excel 2007). I then decided to participate in the Office 2013 trial, so I downloaded and installed that on top of everything. It worked correctly, and I could open files normally. Then I deleted Office 2007 in an effort to save space, and now I'm encountering problems.

Basically, every time I try to open an Excel file, Windows 8 gives me the "How do you want to open this file?" dialogue. I check "Use this app for all .xls(x) files" and click "Keep using Microsoft Excel" and the dialogue closes but the file doesn't open.

The only way I can get excel files to open now is by going to the Metro menu and opening Excel 2013, then opening the file from there.

Is there a way to fix this issue without resorting to the workaround method?

Thanks in advance!

Hi.............I also found this with excel but word works ok......Did you get a answer to the problem.......

Thanks

Roger