@Ernst First of all sorry to hear about your problem. Let’s see what can be done to get to the root cause of it, although these issues are very rare in actuality.
Pencil2D 6.06 doesn’t exist. It’s either 0.6.0 or you got a version from a different download site, however if the latter was the case we urge you not to download version from any other place other than http://pencil2d.org/download as we can’t provide support for custom made version by other people; we can only vouch for what we present here.
However by your description since you’re having issues with the camera motion then it must be a really old version of Pencil2D, If you like you can test the latest development build from February 5th 2019 which is a WIP version in development state, but even then it has many fixes in comparison to such an old version. Here’s a direct link for that:
Windows (7+ [x64]) : https://drive.google.com/open?id=1juDKIkv1F8fuNruGBwauA_y-7UNWibis
If after trying this version your problem is fixed please let us know. If it’s not then please let us know as well so developers can take a look at the problem at hand.
If after this you still have major issues or you simply don’t like Pencil2D, then don’t worry we can provide you with a list of alternate animation software here: http://pencil2d-software.tumblr.com/post/145767476221/when-youve-worked-all-day-on-your-animation