An unknown error has occurred in the HsvWebClient object

In workspace, I open my HFM application

  Select tasks

  Select journal tasks

  Select Process Journals

  Click Reports button

  Click Print/Preview button  (Report Format: HFM-Format)

  Receive this error:

An unknown error has occurred in the HsvWebClient object.

Show Details: Error Reference Number: {79870A7B-3DB5-46DD-9858-A1465DFBD29E};User Name: mressler@EnCanaAD Num: 0x800458c3;Type: 0;DTime: 5/1/2012 12:59:16 PM;Svr: CGYAP1227;File: CHsvReportGeneratorACM.cpp;Line: 887;Ver: 11.1.2.1.000.3082; Num: 0x80044080;Type: 1;DTime: 5/1/2012 12:59:16 PM;Svr: CGYAP1225;File: HFMActionsExecution.cpp;Line: 2415;Ver: 11.1.2.1.000.3082; Num: 0x80044080;Type: 0;DTime: 5/1/2012 12:59:16 PM;Svr: CGYAP1225;File: HFMActions.cpp;Line: 72;Ver: 11.1.2.1.000.3082; Num: 0x80044080;Type: 0;DTime: 5/1/2012 12:59:16 PM;Svr: CGYAP1225;File: HFMCESAction.cpp;Line: 28;Ver: 11.1.2.1.000.3082;