Unable to find script library '/aspnet_client/system_web/1_1_4322/WebUIValidation.js

[mahehs_k_anjani]

hi

i have on user control that contain two div tag (with runat=server) there is one button when i clicked button, a div is hide and another will shown.

now the problem is when i click the button i get following error.

Unable to find script library '/aspnet_client/system_web/1_1_4322/WebUIValidation.js' Try placing this file manually, or reinstall by running 'aspnet_regiis -c'.

i have tried both the option given in above error but still the error is occurs.

pls let me know if any has solution urgent.