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In PondPack version 10, the following error message occurs when trying to open a model:
Runtime Error: Failed: CJetProjectManager::Can CompactHJetDataConnection : Failed: CJetDataConnection::UserCountUnable to open user roster
This error message generally occurs when the file path for the model is too long. PondPack Version 10 and older has a limit on the length of the file path. If the path from the name of the drive to the file extension is over 112 characters, the error message is generated.
To resolve the issue, move the model to a shorter file path. The file should then open.
Please note that this issue will not occur with the latest release of PondPack (PondPack V8i).