500 Server Error for Python in ASP Script

The following asp script is giving me the error: "HTTP/1.1 500 Server Error"

<%@ Language = Python%>
<%
def main():
    Response.Write("My first ASP script!")
main()
%>

when I run it on IIS 7.5 Windows 7 (64 bit). In the error log it simply mentions an ASP_0147 error.

I have installed Python 3.2 and Active Python 3.2.2.3 on the server and registered Python via: pyscript.py

I have enabled 32-bit applications for the server. I have also installed Python for Windows to see if that would help.

Can you suggest how I might fix this?

UPDATE:

I have managed to get this working now for python3 but I have to register with --debug, as follows:

C:\Python32\Lib\site-packages\win32comext\axscript\client>c:\Python32\python.exe
 pyscript.py --debug
Requesting elevation and retrying...
Registered: Python (for debugging)

Why will it only work in debug mode? Is it safe to run in this mode?

Here's the trace when debug is enabled:

Object with win32trace dispatcher created (object=None)
in <win32com.axscript.client.pyscript.PyScript object at 0x00000000035946A0>._InvokeEx_-SetScriptSite(<PyIActiveScriptSite at 0x00000000036923B0 with obj at 0x000000000056FFD8>,) [1,0,None]
Debugging extensions (axdebug) module does not exist - debugging is disabled.. 
in <win32com.axscript.client.pyscript.PyScript object at 0x00000000035946A0>._QueryInterface_ with unsupported IID IActiveScriptProperty ({4954E0D0-FBC7-11D1-8410-006008C3FBFC})
in <win32com.axscript.client.pyscript.PyScript object at 0x00000000035946A0>._InvokeEx_-InitNew() [1,0,None]
in <win32com.axscript.client.pyscript.PyScript object at 0x00000000035946A0>._InvokeEx_-GetScriptDispatch(None,) [1,0,None]
in <win32com.axscript.client.pyscript.PyScript object at 0x00000000035946A0>._QueryInterface_ with unsupported IID {1D044690-8923-11D0-A