[Laszlo-user] Problems building openLaszlo from source

[Pico Geyer]

Hi all.

I'm trying to build openlaszlo from source.
I've been following the instructions at:
http://wiki.openlaszlo.org/SubversionBuildInstructions
I'm running "ant build" in the $LPS_HOME directory.
My builds always fail with the following error:

lfcs:
BUILD FAILED
/home/pico/OL/openlaszlo/tags/4.1.1/build.xml:588: The following error
occurred while executing this line:
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

I'm building on an Ubuntu 8.10 system.

Can anyone tell me what I need to do to get this to work?
I've tried building trunk and the 4.1.1 tag, both give the same error.

Is there any extra info I can provide to help solve this problem?

Thanks in advance
Pico