It looks like this has something to do with inserting a BLOB or CLOB the wrong way, where you specify the size of the object you are inserted wrongly. Without seeing your source code, it's hard to tell what exactly is wrong with your program.
This is good advice. I notice you didn't reply to it.
Just because something worked in a previous version doesn't mean you are home free. It could have been a bug in the previous release. It could be a system change. It could be almost anything. You have to pursue it as a new problem until you know more.