Graphical Modeler: Server returned HTTP response code: 500 for URL CRM_MKTTG_SEGAP/communication.do

Hi,

  I'm trying to create a target group in web graphical modeler based in service order dates, example: all the business partners that have a service order on 02.02.2012. But when drag and drop the attribute with the filter get the following error: "Communication Error" - Server returned HTTP response code: 500 for URL: http//xxxxxxxxxxx/bc/bsp/sap/CRM_MKTTG_SEGAP/communication.do

  I built the infoset with tables BUT000 - CRMV_LINKPARTNER - CRMD_ORDERADM_H - CRMD_LINK - SCAPPTSEG.

If I try with a date range, the result is all existent BPs (it is wrong too!), however if the filter is like "Equal 02.02.2013" get the Communication Error.

We're in CRM 7.0 SP 9.

I've found is that perhaps it is the way SAP handles dates and there is probably an error in the Java Applet. 

Any info is really appreciated.

Thanks

Cris