I have just updated our mediawiki from 1.24 to 1.26.2 and everything appears to be fine except that when editing a page using VisualEditor it gives the above error, the parsoid cmd window also doesnt show anything at all when trying to edit a page.
http://localhost:8000/ - Works fine and all test pages work, i can see parsoid in the cmd window parsing pages.
http://vm-wiki:8000/localhost/Main_Page - Works and i can see parsoid parsing the page.
I can only assume i have a VE issue but i cannot seem to find where, anyone have any ideas? - Its a Windows install with php and mysql - any help appreciated.