Page Layout: Unable to Resolve Error

Hi,

I have a Java CAPS 5.1.0 project with page layout and page flow which was working some time back, but now is giving 'Unable to resolve Error' when ever I try to change the page layout, i am not able to change the page layout at all or copy it and use it another project, in fact now i am not able to create any new page layout, all of them are giving the same error. Any pointers to resolve this would be helpful.

regards

Giri

[459 byte] By [CAPSDeveloper] at [2007-11-26 9:32:47]