Installation on network drive error!

I always use the data folder on a network drive (Y: in my case) to give a user a option to use any computer in my network… So, when I install notes the program folder is c:\program…\lotus and data folder is y:\lotus.…\data, the problem is when I try to install the version 6.5.4 I received a error saying that I don´t have permission in my y:\lotus… to change some permissions in some files and I have full permission in this directory. What´s change in this version ? Why I can´t install on a network drive the data folder ?

Subject: Installation on network drive error!

So there are existing files in Y:\Lotus…? Maybe some of them are flagged read-only.

Subject: RE: Installation on network drive error!

No, I removed…