xsi xstream 9 render error

[wotty33]

if i try to preview render in xstream9 in the xsi "main camera" i get the following error message :

' ERROR : PHEN 0.4 error 051011: shader "Vue_xStreamEnvMR" not found

any one know what this is and how it can be fixed? im running soft 2011 64 bit

cheers, paul