remote scripting help

hey guys,
have a quick question on remote scripting. im currently supporting this web application which basically uses classic asp, vb 6 and javascript. recently the user got this error
'The following error occurred during the undefined remote scripting call: <<url>>'
i tried doing this on my development environment.. but now it's giving me this error:

Line:261
Error: Object doesn't support this property or method

the thing is, a few years back (i wasn't the support person) it was working, then after using it now it's giving these errors..im not sure if there were some changes on the servers, that's what im trying to figure out, i was hoping someone can point me to the right direction on which to check first..
does anybody know how to solve any of the following issues?

 

We're going to need you to give us a little more info on this. What is the property or method being called on? What does the asp page do? Do you have a URL we can use to pull up the site and see the complete error message?

rcp
DiscountASP.NET
www.DiscountASP.NET

 

unfortunately i can't give the url as it's only used internally for the company..
basically the page is used to create reports and there's an applet used to update the notes section...this notes section updates the contact information on the database..

attached are the screenshots of the error the user got.. the screenshot2 is the first error the user provided me..

so i checked the saveaddnotes function and placed some alert messages before and after the oRO variable and i think the problem is on that line as it doesn't go beyond that..