Thanks again! Unfortunately, with the 4.2.2 version in the plugins database it looks the same.
I had a look whether I could figure out the necessary changes myself. It seems that the PHP7.0 count function needs to be replaced. Unfortunately the three places from the OU version sort of have changed and multiplied with the 4.2.2. Esp. the old cas/castext.class.php with only one "count" has been replaced by a new file tree cas/castext/*.* where there are now several places that contain the PHP7.0 count function.
I had a look whether I could figure out the necessary changes myself. It seems that the PHP7.0 count function needs to be replaced. Unfortunately the three places from the OU version sort of have changed and multiplied with the 4.2.2. Esp. the old cas/castext.class.php with only one "count" has been replaced by a new file tree cas/castext/*.* where there are now several places that contain the PHP7.0 count function.
It seems best to wait for 4.3. Thanks all the same!