[Bug 26584] New: After running xlsx importer once, excel 2000 does not open files from nautilus anymore

http://bugs.winehq.org/show_bug.cgi?id=26584

Summary: After running xlsx importer once, excel 2000 does not
                    open files from nautilus anymore
           Product: Wine
           Version: 1.1.35
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

I have had excel 2000 running smoothly on my system.
I installed the 
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File
Formats (FileFormatConverters.exe) 
http://www.microsoft.com/downloads/en/details.aspx?familyid=941b3470-3ae9-4a...

This works file for Word. After running xlsx importer once succesfully on an
.xlsx file (first, a convertor is run, and then the file opened), I tried to
open regular .xls files again.

Excel 2000 does not open .xls files from nautilus anymore by double-clicking on
them.
I can, however, still drag xls files into excel, and they open fine.

Uninstalling Microsoft Office Compatibility Pack does not fix the problem.
Apparently a Nautilus or registry association is changed.
However, I have no knowledge of either registries.