Hello and welcome to BBB! First, I'd update your version of Flash to make sure you have the latest version. You can get it on
Filehippo.
The please see
Post 28 of the FAQ for YM. This seems to be the way to best take care of the missing text issue.
Finally, since YM has been extremely sensitive to malware lately, I strongly suggest a complete virus and spyware scan with up to date definitions for good measure.
Let me know if you are able to fix the problem!