Setting of lang.gui via remote provisioning

[cloudaware]

Here is the level6 debug log from the phone (i removed loads of lines that are not too relevant:

#Get the provisioning document
Oct 26 19:06:05 ATP [723.756]: DURL<6+info > [DCMN]GET /test.cfg HTTP/1.1
#Provisioning document downloaded successfully
Oct 26 19:06:05 ATP [723.756]: DURL<6+info > [DCMN]Recode is 200, Request ok.

Get the custom languagefile
Oct 26 19:06:05 ATP [723.756]: DURL<6+info > [DCMN]GET /lang-Cloudaware.txt HTTP/1.1
#Downloaded successfully
Oct 26 19:06:05 ATP [723.756]: DURL<6+info > [DCMN]HTTP/1.1 200 OK
Oct 26 19:06:07 ATP [723.756]: DURL<6+info > [DCMN]Recode is 200, Request ok.

#One single error about the particular line that i already know is not being applied
Oct 26 19:06:07 ATP [723.756]: ATP <6+info > AUTOP: gui_lang.url [Fail].

So i can actually see in the logs that this is going wrong. But the weird thing is: this does not happen if i download test.cfg and then import it via the webgui. So i am assuming the contents of this file are correct.