Install Problem with SSRS 2005 SP3

what’s the problem when installing dynamics ax 2009 reporting extensions for ssrs 2005 sp3 ?
i don’t know exactly, but i know a workaround !

Problem in class TaxSpec

Noncritical bug found in class TaxSpec in Dynamics AX2009 SP1.
The method taxExemptDescription uses a returntype of Description ( 60 char), but returned variable is of type Memo / Notes.
You’ll will always get the first 60 character of the defined text.
Description taxExemptDescription()
{
return taxExemptDescription;
}
change to:
Notes taxExemptDescription()
{
return taxExemptDescription;
}
and the same [...]