Has anyone experienced this error when opening the edit product detail page?
nopCommerce version is 1.60.
My server is Windows 2008 Web Server running IIS7 with ASP .Net4.0. Thanks in advance.
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; MS-RTC LM 8; .NET4.0C; .NET4.0E)
Timestamp: Wed, 22 Dec 2010 21:03:34 UTC
Message: '_select.options' is null or not an object
Line: 128
Char: 651
Code: 0
URI: http://www.comway.co.nz/eStore/administration/ProductDetails.aspx?_TSM_HiddenField_=sm1_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d3.5.40412.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-NZ%3a065e08c0-e2d1-42ff-9483-e5c14441b311%3ade1feab2%3af9cec9bc%3aa0b0f951%3aa67c2700%3aa578e1b4%3a347641bc%3a5a15a1b0%3a5f7bdc4f%3a52352bec%3a4c797d40%3a3699b58e%3ac8f62c63%3a25452a86%3a47a6309d%3a54faba7a%3af2b15c81%3a2a44e3cc%3a1c9108b5%3ae70cd33d%3a42921c86%3a1177529e%3a8074c3f9%3a1eecc3f9%3a8d1c8c98%3a73671002%3a8a2dc8cf%3a737231d4%3a9a87c62e%3a66bd1a69%3a3def063d%3a11fb7995%3a5ec83a74%3a67f6b48f%3a983d445b%3a3fce0808%3a5e87ca19%3a4cbfbdb9%3aec89763d%3ab577cb0f%3ac72764b0%3abd1a3ba5%3a49d880ab%3ac156824%3ab399670c%3af51fc3d8%3ab4f826f2%3a1afc766f%3a5bea0edc%3aa68e3267%3afa404748%3a789343a%3a4fad5f49%3aa432d795%3ac5750145%3af14fa3a5%3abbb7ea0d%3af4cfcbf9%3ac99d32c9%3aea1c4087%3a58bb39a5%3a6fdc0f25%3a33a14b0b%3ac961e0ab%3a3868b074%3aa7175a9c%3abe682e2f%3a7a78d086%3a9a2789ea%3a7c33c41%3aa737f871%3a1226bbfb%3a6cba3bab%3ae48edae4%3a8cef1288%3a50a74782%3a8afeb62d%3a4b5e28d8%3ab3dc9e3%3acea4901c%3a414a2e6d%3a56de2be0%3af2c8e708%3a720a52bf%3a589eaa30%3a698129cf%3ae148b24b%3ada1bcd61%3aab09e3fe%3a87104b7c%3a8613aea7%3a3202a5a2%3abe6fb298
