“.NET runtime exception: database disk image is malformed”
indicates that the local SQLite database used by Project Manager has become corrupted. This is a known SQLite error that usually occurs when the file is unexpectedly modified or accessed improperly.
> ✅ You do not need to reinstall Project Manager.
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🛠 How to Fix It:
1. Launch 3ds Max, then go to Project Manager > Preferences > Database tab.
2. Click the “Restore Database” button.
This will rebuild the damaged database while preserving as much data as possible.
3. If you want to preserve a copy of the corrupted file for recovery:
Rename any .db file (e.g. settings_corrupted.db) before restoring.
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⚠ Possible Cause
One common cause of this error is trying to share a SQLite database across multiple computers simultaneously (e.g. placing the .db file on a network share or syncing it via Dropbox/OneDrive).
> SQLite is not designed for concurrent access from multiple machines – doing so can easily lead to corruption.
If you need to use a shared database across a team, we highly recommend switching to MySQL, which is supported in Project Manager and is specifically built for multi-user environments.
I am stuck with the mysql database because it doesn’t work with the stable version 8. Version 9 is still unreleased and is an officially unreleased development version, so we have more problems with the installation and configuration, but then I will have to work on it.
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