[Bug 49597] New: Guitar Pro 7.5 can't open valid .gp files once they have been changed in any way (like composing), also cannot open newly created .gp files

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49597

            Bug ID: 49597
           Summary: Guitar Pro 7.5 can't open valid .gp files once they
                    have been changed in any way (like composing), also
                    cannot open newly created .gp files
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: narfkeks at yahoo.de
      Distribution: ---

Guitar Pro 7.5.4 Build 1799 can't open valid .gp files once they have been
changed in any way (like composing), also cannot open newly created .gp files.

The program fails to load legitimate gp files unless they have not been altered
since before the last wine update. Changing anything in a gp file, like
correcting notations or rewriting a song/sound as well as creating a new file
leads to those files not being able to load once the program tries to load them
in again in another instance (for example after closing Guitar Pro 7.5 or after
closing the file itself). Guitar Pro 7.5.4 freezes (becomes unresponsive) and
has to be shut down via commands or similar means to be fully closed and
reopened. Reopening however does not fix the issue.

Due to this bug it has become fully impossible to compose music or alter
existing songs as those files won't open the next time a user would like to use
them. In that way it is a critical bug for composers and problematic for
teachers.

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