Navigation Skin Error

[AndyWhitley]

I get the following warning when trying to save my flash project:

Data binding will not be able to detect assignments to "Length".  NavigationSkin.mxml

I am new to Flex, any suggestions would be greatly appreciated.

[RobertScheitlin__GISP]

Andy,

   That warning is insignificant and can be ignored.

[AndyWhitley]

When I go to export my release build it gets almost complete but then fails due to this warning?

[RobertScheitlin__GISP]

Andy,

   What Flex SDK version are you using and what AGS Flex API version are you using?

[AndyWhitley]

I am using flash builder 4.5 and flexviewer build 2.3, hope this is what you needed.

[RobertScheitlin__GISP]

Andy,

  Nope... In Flash Builder right click on the FlexViewer 2.3 project (in the package Explorer) and choose properties.
Under Flex Compiler What is the Flex SDK Version you are using? Also under Flex Build Path and Library Path tab expand libs folder and which agslib-*-2011-*-*.swc are you using?

[AndyWhitley]

It displays 4.5.1....agslib is-2.31-2011-04-26.swc

[RobertScheitlin__GISP]

Andy,

   It is recommended that you use Flex SDK 4.1 with the old agslib-2.3.1-2011-04-26.swc and 2.3.1 version of the Flex Viewer.

[AndyWhitley]

I only see if 3.6, 4.5 and 4.5.1 sdk versions under complier, how can I roll back to 4.1?

[RobertScheitlin__GISP]

Andy,

   Grab it from here:

http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4