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I cannot save a recently typed document

Did ou update your system? Did you change your login identity?
What OS / Version?
Is the system part of an administrated surrounding? For what reason did you tag the question “passwords”?
Did you already try to use a different (from default) location with a ‘Save’ action?
Your issue is surely a matter of rights with respect to your file system.

@jgurteen:
Please edit the subject. (“thse” >> “these”)
Why didn’t you report about the problem again? Solved? How?