Saxon and jvm

If my understanding is right, Saxon gets its jvm
from ie5 by default?

I just installed ie5.5 and instant saxon comes
back at me with 
Cannot find ParserManager.properties - using built-in parser

Prior to 5.5 install this had never occurred. Has something
changed in IE5 to make it invisible?

Anyone else come across this... and does it matter?
Aelfred is,  I think, the built-in parser?

TIA DaveP


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