Sounds like you've copied a Flex 4.0 project into a Flex 4.5.1 workspace this link is for Flex 3->4 but the principles apply.
http://www.adobe.com/devnet/flex/articles/flexbuilder3_to_flashbuilder4.html Cheers, Rick Winscot From: Wemerson Couto Guimarães <wemerso...@gmail.com> Reply-To: "flexcoders@yahoogroups.com" <flexcoders@yahoogroups.com> Date: Sat, 31 Dec 2011 09:08:47 -0200 To: "flexcoders@yahoogroups.com" <flexcoders@yahoogroups.com> Subject: [flexcoders] Hi everyone. I'm having problems with FB 4 PHP 4.5.1 ... After running a project once, when trying to run it again, I get the following message: C:\Program Files (x86)\Zend\Apache2\htdocs\crud-php\public\bin-debug\Main.swf (access deined) crud-flex Unknown Flex Problem Then I try, I try and I can not work ... even running a Project-:Clean or even restarting the FB. Does anyone know what this is? complementing ... When run with a Project-> Clean I get the message below: Errors occurred during the build. Errors running builder 'Flex' on project 'crud-flex'. Problems encountered while deleting resources. Could not delete 'C:\Program Files (x86)\Zend\Apache2\htdocs\crud-php\public\bin-debug\textLayout_2.0.0.232.swf '. Problems encountered while deleting files. Could not delete: C:\Program Files (x86)\Zend\Apache2\htdocs\crud-php\public\bin-debug\textLayout_2.0.0.232.swf . Problems encountered while deleting resources. Could not delete 'C:\Program Files (x86)\Zend\Apache2\htdocs\crud-php\public\bin-debug\textLayout_2.0.0.232.swf '. Problems encountered while deleting files. Could not delete: C:\Program Files (x86)\Zend\Apache2\htdocs\crud-php\public\bin-debug\textLayout_2.0.0.232.swf . -- Wemerson Guimarães Rio Verde - Go - Brazil