Error submitting form with textarea

I have a simple Roo-project with a field set up like this:

Code:

---

field string --fieldName content --notNull --sizeMax 10000

---

Roo generates a textarea for this in the views, which is fine!

But as soon as I submit the form with content in the textarea, the webserver (tc runtime) gives an error 400:

Code:

---

HTTP Status 400 -

description The request sent by the client was syntactically incorrect ().

VMware vFabric tc Runtime 2.6.1.RELEASE/7.0.20.B.RELEASE

---

I tried with Roo 1.2.0 and 1.2.1, and always get this error.

Database-wise the field got created as a varchar(10000).

Where is the problem here ?

Any hint what could go wrong here? Am I the only unlucky fellow who can not insert blobs? :)

Btw there is no exception in the server console when the error 400 happens.

If someone wants to see the error, go to the following URL and try to post a new "Content" with a non-empty textarea:

http://iman.glodt.name/iman/contents?form