[rt-users] Problem upgrading from 3.6.1 to 3.8.1

[panu at colorplaza.com]

Everything else is going just fine with the upgrade except the end result :)

when I upgrade the schema I get various errors like:

ERROR 1064 (42000) at line 131: You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the 
right syntax to use near 'CHARACTER SET utf8 NULL DEFAULT NULL' at line 1

whole query:

ALTER TABLE Templates MODIFY Content BLOB CHARACTER SET utf8 NULL 
DEFAULT NULL;

I don't see anything wrong with that line.

also there's an error displaying in every page:

The server encountered an internal error or misconfiguration and was 
unable to complete your request.

etc...

the error in error log is:

Can't locate object method "CleanSlate" via package 
"RT::Action::SendEmail" at 
/opt/rt38/bin/../lib/RT/Interface/Web/Handler.pm line 213.\n, referer: 
http://...

are these 2 errors related.