I am doing some work on writing FlexUnit test cases for the FileMonitor class which I have added to as3corelib. Once I wrote the test, I got the following error, which didnt make a lot of sense to me at first:
[SWF] FileWatcher2.swf - 1,040,015 bytes after decompression Error: Error #2037: Functions called in incorrect sequence, or earlier call was unsuccessful. at flash.filesystem::File/_exists() at flash.filesystem::File/get exists() at com.adobe.air.filesystem::FileMonitor/set file()[/Users/mesh/src/ as3corelib/src/com/adobe/air/filesystem/FileMonitor.as:138] at com.adobe.air.filesystem::FileMonitor()[/Users/mesh/src/as3corelib/ src/com/adobe/air/filesystem/FileMonitor.as:94] at FileWatcher2/onFileSelect()[/Users/mesh/Documents/Flex Builder 3/ FileWatcher2/src/FileWatcher2Class.as:32]</code>
The error is thrown when trying to access a property of the File class (as well as FileReference) before the class has been initialized with a file path. Specifically, the File and FileReference classes must be initialized to reference a file path, before their properties can be accessed.
For example, this will cause the error:
var f:File = new File(); trace(f.exists());
This will not cause an error:
var f:File = File.desktopDirectory; trace(f.exists());
Anyway, just wanted to post it here in case anyone else runs into the issue.