[TYPO3] front end user registration: blank page when choosing alternative language

[Robert Markula]

Franz Holzinger wrote:
> Hello Robert,
> 
>> I've just setup a multilanguage site (one-tree).
>>
>> On the main page I inserted the front end user registration plugin (v. 
>> 2.5.1). As soon as I switch to the alternative language, the whole 
>> page is blank. However pages without this plugin render ok.
>>
>> When I deactivate the sr_feuser_register plugin and switch to the 
>> alternative language, everything is displayed correctly.
>>
>> I found no entries in the bug tracker for sr_feuser_register, any ideas?
> 
> Which settings code/flexform plugin do you use?

One thing to note though; I use the plugin two times on our web site. 
Don't know if this is important for troubleshooting.

Cheers,
Ro