Using an HTMLEditorExtender that is contained in a Collapsible panel (CollapsiblePanelExtender); if your page raises a post-back while the panel is in a collapsed state, you get the following javascript compilation error:
Message: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.
Line: 48
Char: 9487
Code: 0
URI: http://www.mywebsite.com/mypage.aspx?_TSM_HiddenField_=ctl00_Sm_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d3.5.50927.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-GB%3a4a126967-c4d4-4d5c-8f94-b4e3e72d7549%3ade1feab2%3af9cec9bc%3aa0b0f951%3aa67c2700%3ae4bd8421%3af2c8e708%3a720a52bf%3a589eaa30%3a698129cf%3afb9b4c57%3ab2b1857f%3a506d1273%3a4a2c8239%3ada1bcd61%3a8613aea7%3a3202a5a2%3aab09e3fe%3a87104b7c%3abe6fb298
Also, any links created within the text become escaped by a post-back.
Any ideas?
Comments: This issue is fixed with May 2012 release.
Message: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.
Line: 48
Char: 9487
Code: 0
URI: http://www.mywebsite.com/mypage.aspx?_TSM_HiddenField_=ctl00_Sm_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d3.5.50927.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-GB%3a4a126967-c4d4-4d5c-8f94-b4e3e72d7549%3ade1feab2%3af9cec9bc%3aa0b0f951%3aa67c2700%3ae4bd8421%3af2c8e708%3a720a52bf%3a589eaa30%3a698129cf%3afb9b4c57%3ab2b1857f%3a506d1273%3a4a2c8239%3ada1bcd61%3a8613aea7%3a3202a5a2%3aab09e3fe%3a87104b7c%3abe6fb298
Also, any links created within the text become escaped by a post-back.
Any ideas?
Comments: This issue is fixed with May 2012 release.