Hi,
I understand the problem is only occurring for one user. Are there any changes in this user
when compared to other users because of which the problem is occurring only for this user?
Can you please refer the following SAP KBA Note and check whether it helps you:
1860872 - Report not executable in BEx Analyzer 7x / Client out of Memory
Also, can you please refer the following SAP Note:
147519 - Maintenance strategy / deadlines for SAP GUI
Thanks & Regards,
Sapna