Changes to Photoshop CS5 and Applescript

Question

Looks like there are some major Applescript changes to CS5, which is unwelcome for anyone with existing scripts. From what I can see, the difference (that affect me anyway) are
a) PSCS5 seems to dislike referring to files with "as alias" and removing this from my scripts helps them to work, whereas other apps need it, as did previous
b) apparently script support for referring to the currently document has changed. "if visible layer of current document is true then..." no longer works, nor do document 0, document 1, etc. Anyone know how to refer to the current document?
c) support for history doesn't seem to be there anymore. I cannot seem to use AS commands like, "set myState to history states as list" or "set current history state to history state newState" were awesome for my workflow, but are they impossible to achieve now?
d) One more. The important "set docref to make new document with properties {height: 150, width: 150}" is also broken. How would one make a new document in Applescript?
I'd appreciate any help you could give me in updating my scripts

Answer 1

I just found the AppleScript documentation in /Applications/Adobe Photoshop CS5/Scripting/Documents/. But I don't think it's even accurate. Here's a very simple sample they give:
tell application "Adobe Photoshop CS5"
     filter current layer of the current document using lens blur with options {class:lens blur, radius:13}
end tell
If I enter this in AppleScript Editor and try to compile it, it selects the word "current" and tells me "Expected end of line but found identifier." It doesn't even recognize "filter" as a command. If I just change that 5 to a 4, it works fine in CS4.
Here's one way to run a JavaScript file from AppleScript:
tell application "Adobe Photoshop CS5" to open file "Path:to:file.jsx"
Of course there's no way to pass any arguments this way, so that greatly limits its usefulness. But perhaps this will be helpful to some people. I'm assuming the JavaScript stuff all works fine, as that seems to be their focus these days.
The really strange thing is that certain things seem to work fine in AppleScripts that are already compiled (using CS4). But if I try to re-save those scripts with CS5 installed, I get errors.