SONAR 5 introduced a special diagnostic mode called Safe Mode to fix problems with project files that would not open. Safe mode is activated when you open a file while the SHIFT key is pressed.In certain rare circumstances, on attempting to open a project file you may see the following error message:This message indicates that SONAR detected errors in the project file and was unable to open it. This normally indicates that your project file has data corruption.
You save a “recovery file” through SONAR's crash exception dialog box. When a crash occurs in SONAR, you are presented with this dialog box allowing you to attempt to save a recovery file. While this works most of the time, occasionally SONAR may be in a compromised state due to memory corruption. Under these circumstances, saving a file might cause a crash or the file might contain invalid data.In general, the best insurance against the data corruption scenarios above is to follow standard safe computing practices to guard against data loss (keep regular backups, use autosave with versioning, etc.). However, occasionally you may be faced with a situation where you do not have a backup copy of a critical project that now fails to open.Do one of the following:
If you are opening a file from the Most Recently Used files list in the File menu, hold down the SHIFT key while selecting file name.
If you are opening the file from the Open dialog box, select the file in the dialog box and hold down the SHIFT key while clicking the OK button.
In many cases, File Recovery Mode may be able to open damaged projects with minimal data loss. However, the level of success depends on the nature and extent of the data corruption, so the results are not predictable. As a result of this, after opening a damaged project in File Recovery Mode, you must carefully observe whether your settings have been retained or if the project exhibits other problems. If you notice problems you should copy and paste the critical data from the recovered file into a brand new empty project to start clean.After loading a file with File Recovery Mode, it is recommended that you resave the file—preferably with a new name—and then shut down and restart SONAR before proceeding.
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