Hi Janine,
Can you please use the latest version of IGS and check whether it helps you.
Also, can you please apply latest patch of SAP GUI for Windows 7.30 and
latest patch for BI 7.0 ADDON FOR SAP GUI 7.30 and check whether it helps you.
Also, please refer the following SAP Note:
147519 - Maintenance strategy / deadlines for SAP GUI
And, can you please clarify regarding what is the SPS level applied to ABAP stack and Java stack and SP and Patch Level applied to BI Java components with regard to this issue.
Also, please refer the following SAP KBA Note:
1899396 - Patch Level 0 for BI Java Installation - Detailed Information
Thanks & Regards,
Sapna