In rare cases upgrading may fail to overwrite old files, resulting in random or bizarre behaviors and crashing. The fix for this problem is to completely uninstall and manually remove remaining files before installing the upgrade again.
To uninstall on Windows, run the Add/Remove Programs control panel to uninstall Wing IDE. Then go into the directory where Wing was located and manually remove any remaining folders and files.
If you installed Wing IDE for Linux from RPM, issue the command rpm -e wingide4.1. Then go into /usr/lib/wingide4.1 and remove any remaining files and directories.
If you installed Wing IDE for Linux from Debian package, issue the command dpkg -r wingide4.1. Then go into /usr/lib/wingide4.1 and remove any remaining files and directories.
If you installed Wing IDE for Linux from the tar distribution, find your Wing installation directory and run the wing-uninstall script located there. Once done, manually remove any remaining files and directories.
Mac OS X
On Mac OS X, just drag the entire Wing IDE application folder to the trash.
If this procedure does not solve the problem, try moving aside the User Settings Directory and then starting Wing. If this works, try restoring files from the old user settings directory one by one to find the problem. Key files to try are license.act*, preferences and recent*. Then submit a bug report to firstname.lastname@example.org with the offending file.
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