Fix environment for MantidPlot tests

MantidPlot/CMakeLists.txt

@@ -921,7 +921,7 @@ else ()
 	endif ()
 
 	# Add an environment property MANTID_SOURCE so that the script can find the source of xmlrunner
-	set (TEST_ENVIRONMENT "MANTID_SOURCE=${CMAKE_SOURCE_DIR};PYTHONPATH=${CMAKE_CURRENT_SOURCE_DIR}/test;MANTID_SCREENSHOT_REPORT=${SCREENSHOTS_DIR}" )
+	set (TEST_ENVIRONMENT "MANTID_SOURCE=${CMAKE_SOURCE_DIR};PYTHONPATH=${PYTHON_XMLRUNNER_DIR};MANTID_SCREENSHOT_REPORT=${SCREENSHOTS_DIR}" )
 
 	# Fixes for Darwin (MacOS)
 	if ( ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")