Error Dat can't read all of msg

Bugs
,
1

why can’t read the warning message in moviefilein1 by Error Dat,
here I made two example to describe this situation.

1da49d03ffc46424ed3f766b50044c0
1da49d03ffc46424ed3f766b50044c03570×1712 268 KB

Demo.toe (5.5 KB)