I'll need to check this and will write you the result here in this post then.
Edit for Chip:
This more or less relates to the 2nd error from silvereyes movie:
Today I opened the mailbox directly after login and my inbox was empty, no new mails were shown. But I definately got 4 new hireling mails and severla older ones in there.
As you can see I'm using the German client language.
-> GetInteractionType() was 0 at this moment.
Changing the mail tabs from inbox to send and back didn#t fix this!
I closed the mail inbox and reopened it again. Eh voila my mails are shown correctly and I was able to get the attachments.
If I manage to get the 1st shown error from the video too I'll post the GetInteractionType results here too.
Edit:
Got the bug 1 from the video and GetInteractionType() returns 0 here too
It happend directly after a character change as I opened the mail inbox by help of the keybind the first time.
Closing the mail and reopening it solves the problem.