Did you download the Vista version?
http://www.callserve.com/internet_te...d_software.asp
And you might try right-clicking on the install program, and select "Run As
Administrator"...
Other than that, I don't know, because I never used Callserve.
I do have Skype installed, and it seems to work ok.
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"Carol" <> wrote in message
news:55FA4A76-4392-41D6-A885-...
> I had Callserve on Widows XP no problem, just gone over to Vista and when
> I
> downloaded Callserve, I get the following error: The application has
> failed
> to start because its side by side configuration is incorrect.
>
> Please help