Boot Disk Creator not accepting file name - DS 7.5

Hello,

I am trying to create a test Boot Disk using BDC utility available in Deployment Solution 7.5. I am running bootwiz.exe as admin from BDC package folder in Package Delivery folder on our Task / Package Server.

However, at Step 1 of the process it is not accepting the file name and everytime returns Invalid File Name error (attached for reference).

I referred to below article and seems like there are no naming conventions associated to it.

https://www-secure.symantec.com/connect/articles/c...

Kindly advise if this has to be done in a specifically different way.

Thanks
Snm1502