Multiple choice list/library column not accepting multiple choices

Steve_Penner Not sure whether this addresses the same context -/ issue.

I created a Sharepoint Document library

I added new columns - one of them being of Type Choice - Multiple allowed.

I created a word doc in this document library

Downloaded document

Enabled display of Sharepoint Library Properties in Development Tools tab

Now - in the top area the columns are displayed.

PREVIOUSLY whenever I did click on one of the checkboxes I did get an error (Element may not be added {how I like the translated error messages without ID's})

I did the following:

In Sharepoint, BEFORE downloading, I did check MORE THAN ONE option - for every multiple choice column.

Then, after downloading, I was able to select as I wish.