I have saved the nav bar and menu usind the dreamweaver insert bar, when it is implemanted into DW 8 and I click on it it goives me the following message

While executing inspectSelect in ws4 dwexp i locked-htm, the following javascript error occured at line 51 of file c\program files\ macromedia\ dreamweaver\configurationinspectors_picommon.js; Type error: parentobj has no properties

If I load this onto the server the nav bar will not show , its not there.

I have also saved a heading in webstyle and saved and put it in to the webpage and it has been put up on the server with no problems , I hope you can help me , Im hoping it is something simple as I find webstyle a very good product, hope u can get back to me, many thanks for your advise in advance.