Installing BI 4.6 SP 1

Hi there,

trying to install SP1 with

java -jar BI_4-6_SP1.jar +I:E\designtime\BusinessIntegrator4

I get the following error message:

java.io.IOException: CreateProcess: jar -xf E:\InstallFiles\ServicePacks\BI_4-6_SP1.jar error=2

So what stands error 2 for??

Thanks in advance
Michaela