Re: Broken image link after upgrade fro 2.2 to 5.1
Please, unless you know very well what you are doing, you are suggested to convert all your db, tables and concent to utf-8 to avoid the detected and known issues when issues different charsets (problem fixable by tiki since Tiki 5.1)
Read and follow (once, after you made a backup of your current db, of course) the steps described here:
http://doc.tiki.org/Upgrade#Fix_the_encoding_issue