Hello Mr. Ritesh
I agree with you absolutely, I also got stucked in filing excise returns yesterday, on the same page of selecting Year and Month. Therefore I wrote a mail to aces helpdesk but they have not replied me yet, I also tried to communicate with toll free no. but didn't get a satisfactory reply.
Then I tried to file my returns with several different browsers but unfortunately could not be succeed.
At last, I tried to file my returns with another pc and amazingly problem has been solved and returns have been filed.
Therfore, in my experience, you should try to file your return on another pc.
You are very correct that such problems can be raised due to javascriptts therfore you shold avoid updating java runtime environment.
Rajeev Kumar Garg
(M.Com, L.L.B.)
Consultant (Excise, Customs & Service Tax)
Ph. No. 7500802402.