You must differentiate between:

A 32-bit tick counter in DataLoggerRT.exe wrapping every 2^32 ms (~49.7 days) but incorrectly resetting logging context every 48 hours due to modulo miscalculation. Hotfix mechanism: Replaced modulo arithmetic with a UTC-based checkpoint comparison. Validation: Continuous runtime test of 504 hours (21 days) showed zero data logger crashes or missed entries.

When compiling projects for newer Magelis/Harmony HMI hardware (such as the GTO, GTU, or STO/STU series running newer firmware), unpatched versions of SP12 may trigger unexpected compilation halts or "Internal Error" flags. Hotfixes update the target build engines to prevent these crashes. 3. Data Logging and Recipe Corruption

Which specific you are targeting.