Changing Pages Error "SimpleXMLElement" changedata.php

[hopethisusernameisgood]

Hi!

Thanks for all the effort that's been put into this project. Was fixing one issue with a subnavigation the other day (see other post in dev-discussion) but today i'm stuck with an error that occoured on the production system. Obviously i was trying to update an existing page and tried to save it:

Code:

Warning: SimpleXMLElement::asXML(../../data/pages/quality.xml) [simplexmlelement.asxml]: failed to open stream: Permission denied in /www/dev/admin/inc/changedata.php on line 131

Warning: Cannot modify header information - headers already sent by (output started at /www/dev/admin/inc/changedata.php:131) in /www/dev/admin/inc/changedata.php on line 134

Hope somebody encountered this problem as well, since it would help me to alter my pages correctly

Thanks,

Mike