[BlueOnyx:12326] siteadmin not working blanc page

[Steffan]

Hello i have a 5106 with a blanc page after loging in
Lots of errors

File does not exist: /usr/sausalito/ui/web/""+_flow_style["finishImage"]+",
referer: https://xxxxx.nl:81/nav/jsLibrary.php
File does not exist:
/usr/sausalito/ui/web/""+_flow_style["finishImageDisabled"]+", referer:
https://xxxxx.nl:81/nav/jsLibrary.php
File does not exist: /usr/sausalito/ui/web/""+image+", referer:
https://xxxxx:81/nav/jsLibrary.php
 File does not exist: /usr/sausalito/ui/web/""+nextIconDisabled+", referer:
https://xxxxx.nl:81/nav/jsLibrary.php
File does not exist: /usr/sausalito/ui/web/""+lastIconDisabled+", referer:
https://xxxx.nl:81/nav/jsLibrary.php

Etc

Any idees what to do
There is nothing changes (so far as i know)