I too get an error
Fatal error: Method name must be a string in /var/sites/<sitename>/sapphire/forms/Form.php on line 245
on a completely new install of 2.3.2 with userforms 0.2-rc2, spamprotection 0.2, recaptcha 0.3, mollom 0.2, googlemapselectionfield 0.1
I put userforms in /mysite/userforms (with the s on the end...)
I installed silverstripe 2.3.2, with the userforms etc. logged in as admin, and inserting a userform field didn't produce an error, but failed to actually work. I did a /dev/build and then an /admin/?flush=1 and then the error started.
I've had this error with userforms with all of the 0.2 vesrions (incl. svn) that I have tried. I simply can not get it to work.
I tried installing potentially related modules (spamprotection etc.) in case that would help, but it does not.
This is very frustrating now - have been trying (on and off) for months to get this. In the end, I had to revert to a silverstripe version that has userforms included.
Any suggestions as to what can be done to diagnose this?