Yesterday I updated to LRT5 and produced a time lapse video successfully. After that I opened Lightroom CC to work with some pictures safed in a new file.

Unfortunately, LR did not recognize the new file using the import function as usual. It seems to me that LR was still in the same condition after working with LRT5
since the filters 00 LRT5 sync keyframes etc. were still active. I tried to restart several times but with no success.

Is there anything I did wrong leaving LRT5 after having finished my processing? Any other relationship between LRT5 and LR?

Problem is solved so far! It was a problem with LR usage, not a problem with LRT5!