I tried on another Windows 8 laptop. The gui came up, but the install failed with the following log
Installer version 3.3.1 (windows) Using Locale: en_US Fetched the SDK download mirror URL from the CGI. SDK version Apache Flex SDK 4.16.1 AIR version 29.0 Flash Player version 29.0 Creating Apache Flex home Creating temporary directory Downloading Apache Flex SDK from: http://apache.claz.org/flex/4.16.1/binaries/apache-flex-sdk-4.16.1-bin.zip Verifying Apache Flex SDK MD5 Signature The Apache Flex SDK MD5 Signature of the downloaded files matches the reference. The file is valid. Uncompressing: C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.7\sdks\4.16.1\temp\apache-flex-sdk-4.16.1-bin.zip Finished uncompressing: C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.7\sdks\4.16.1\temp\apache-flex-sdk-4.16.1-bin.zip Downloading Adobe AIR Runtime Kit for Windows from: http://airdownload.adobe.com/air/win/download/29.0//AdobeAIRSDK.zip Validating download: C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.7\sdks\4.16.1/in/AdobeAIRSDK.zip Finished uncompressing: C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.7\sdks\4.16.1/in/AdobeAIRSDK.zip Installing Adobe Flash Player playerglobal.swc from: http://fpdownload.macromedia.com/get/flashplayer/updaters/29//playerglobal29_0.swc Validating download: C:\Program Files (x86)\Adobe\Adobe Flash Builder 4.7\sdks\4.16.1/frameworks/libs/player/29.0/playerglobal.swc Downloading 2.2.zip from: https://github.com/swfobject/swfobject/archive [get] [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032" errorID=2032] Note: I have Flash Builder installed under the Programs directory (not Programs (x86) ). The insistence that the SDK was installed under the Programs (x86) directory meant that it was not in the same directory structure as the rest of Flash Builder. -- Sent from: http://apache-flex-development.2333347.n4.nabble.com/
