Hello Nikhil.
Can you see here?
MAIN MODULE INFORMATION:
SAP GUI for Windows
SAP Logon Pad for Windows
730 Final Release
7300.1.0.1074
1337608
SYSTEM INFORMATION:
Operating system: Windows 8 Pro 6.2 (9200)
You are using patch 0 for Windows 8 
Windows 8 is not supported until patch 1 or higher is applied, and for Windows 8.1, you must use
Patch 7 or higher,.
Apart from that the error is not from the GUI side,
See below:
Previous frontend interpretation time : 109 ms
Previous server response time : 5078 ms (for 1 roundtrips)
The frontend interpretation time is only 100 ms whereas the server time has taken 5000 ms
Please use a supported version for the OS you intend to use.
You can find this information in note
http://service.sap.com/sap/support/notes/66971
Jude