Cannot open data files except .dxp in Spotfire

Dear Tibco Community,

Im quite new to Spotfire (installed it today), so im quite inexperienced with the programm.

However im fairly sure that the error that pops up whenever i try to open a file (not being the typical .dxp file) shoud'nt come up.

The error message reads as follows:

Error message: Unable to read the file .

FileLoadException at Spotfire.Dxp.Framework:
No licensed reader can be found for file: \\...datafile...xls (HRESULT: 80131621)

Stack Trace:
   at Spotfire.Dxp.Framework.Persistence.PersistenceManager.InternalOpen(String fileName, LicenseManager licenseManager)
   at Spotfire.Dxp.Application.RichAnalysisApplication.Open(String filePath, DocumentOpenSettings documentOpenSettings)
   at Spotfire.Dxp.Main.Program.<>c__DisplayClassa.<OpenFile>b__9(LoadCallbackParameters parameters)


As you can see im trying to open an excel file.

Interestingly the open file option in the programm wont let me choose any other file than .dxp (i tried opening the .xls file by right clicking it in the normal windows explorer and chossing the "open with" function).

Thanks in advance for any help.

Greetings, Max

(1) Answer