Sync error - Problem saving to external file - puts the app in a loop

[mpprdev]

22:34:39.197 [In Progress] - Begin Sync [Interactive=NO, outstandingUpdate=NO, forcePull=0, provider=File, workingCacheMod=2024-01-05 17:56:24.441, lastCheckedSourceMod=2024-01-05 17:56:24.441]
22:34:39.208 [In Progress] - Pull Database - Source Mod same as Working Copy Mod
22:34:39.208 [Done] -
22:42:57.175 [In Progress] - Begin Sync [Interactive=NO, outstandingUpdate=YES, forcePull=0, provider=File, workingCacheMod=2024-01-06 22:42:57.174, lastCheckedSourceMod=2024-01-05 17:56:24.441]
22:42:57.177 [In Progress] - Pull Database - Source Mod Date same as Last Time we Checked, no source updates to worry about - Outstanding Update Express Scenario...
22:42:57.177 [In Progress] - Update to Push - [Simple Push because Force=NO, Source Changed=YES, Express Update Mode = YES]
22:42:57.182 [Error] - Error Domain=com.markmcguill.strongbox. Code=-1 "Problem Saving to External File" UserInfo={NSLocalizedDescription=Problem Saving to External File}

[Mark McGuill]

Hi there, is this happening regularly for you, and when did it start occurring?

is this on macOS? If so which version?