problem opening document/s

[Grant Hogden <gr...@hotmail.com>]

I keep having problems opening my document/s
the original excel document was labelled "internet calculations.xls" 
but since your program keeps having problems opening xls and odf files I have saved a few versions of it with variations including xls, odf as well as ...onedrive.xls or odf being saved at various places.
often I save the original .xls in my onedrive and when I turn my pc off and on again I either cannot access it or it opens instead of a spreadsheet, a word document with *****************************************************************
also quite often it says the document has been locked and that I can only open a read only or copy.
as well as that when I try to save the proper version it says I cannot save xls as odf I must either save current version or ???(cant remember rest)
 
any ideas on what is going wrong?
I have a feeling one of the updates may have gone wrong (or do I still have to update it)