Pagination attempt throws error during scraping

[kevin cannan]

The scraper popup throws the following error (see below) when clicking the 'next page' button:

Works fine when clicked manually.

Other link and element click selectors work just fine.  Unfortunatly it is behing a login screen so I can't post the actual site.  (It is http://wwwsc.ekeystone.com)

Any thoughts?  Workarounds?

Thanks.

Server Error in '/' Application.

A potentially dangerous Request.Path value was detected from the client (:).

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Web.HttpException: A potentially dangerous Request.Path value was detected from the client (:).

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 

[HttpException (0x80004005): A potentially dangerous Request.Path value was detected from the client (:).]

   System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +11995904

   System.Web.PipelineStepManager.ValidateHelper(HttpContext context) +54

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.2106.0

[Kristaps Dinstmanis]

The error is in the target page not web scraper. The extension worked as expected.

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[kevin cannan]

Does the server error offer any clue to suggest another way to scrape the site?  Any other techniques I might try to work around?

Thanks.