The following warning appears when I open my 14.4 System Generator model:
xlSyncLevels threw in xlMungeMaskParams: Maximum recursion limit of 500 reached. Use set(0,'RecursionLimit',N)
to change the limit. Be aware that exceeding your available stack space can
crash MATLAB and/or your computer.
Not sure if this error is related.
I also notice that some of the GUIs for some blocks are incorrect with respect to their configuration.