debbuger or unit test tool

[orvio@yahoo.com (orvio)]

Hi, I have a question for you.
I'm using VectorCAST tool for unit test on WindowsXP. My problem is
that VectoCAST doesn't create the ennvironment because of a constraint
error during DATA_IF_ execution. I don't know why the error is
generated because VectorCAST message is not detailed. Therefore I need
of a debbuger for DATA_IF_ executable.
Can anyone help me?
In other case, can anyone suggest me another tool for ADA unit test?

P.S.
The code is compiled with Objectada (AONIX) compiler, therefore
ADAMulti is useless.

Excuse me for bad English.

Thanks to all.