If ERROR_REPORT_COLLECT is not defined, it will abort the build by finding a none command. 

In master/HEAD at dc75c7eefba00dac

I think what you want is....

diff --git a/lib/python2.7/site-packages/autobuilder/buildsteps/SendErrorReport.py b/lib/python2.7/site-packages/autobuilder/buildsteps/SendErrorReport.py
index 159c33a..5441f31 100644
--- a/lib/python2.7/site-packages/autobuilder/buildsteps/SendErrorReport.py
+++ b/lib/python2.7/site-packages/autobuilder/buildsteps/SendErrorReport.py
@@ -50,6 +50,8 @@ class SendErrorReport(ShellCommand):
                     self.errorreportserver = ""
                 self.command = "if [ ! -f ~/.oe-send-error ]; then host=`hostname`; echo \"yocto-autobuilder-autogenerated-$host\" > ~/.oe-send-error; fi ; "
                 self.command += ". ./oe-init-build-env; if [ -d " + self.errordir +"/$x" + " ]; then for x in `ls " + self.errordir +" | grep error_report_`; do send-error-report " + sel
+            else:
+                self.command = "echo environment var ERROR_REPORT_COLLECT not set - Step is noop"
             self.description = ["Sending error reports"]
         ShellCommand.start(self)