This is a known issue with the Player, it will be fixed in a future update.

Were these frame animations?  I wasn't able to recreate this issue although I found another problem when duplicating frame animations.

This should be resolved in the new build coming out this week.

This should be fixed in the next version, we were not able to recreate this exact scenario but there is a similar scenario that we are addressing.

This issue is being fixed for the next update.

We are aware of the issue with deleting pages and it should be resolved in the next release.

In certain cases Sharing fails if pages were deleted.  This will be fixed in the next update which should be available in the next couple of days.

Trying this on a Mac does not cause an issue.  We will do some testing on Windows.