Ok, so we are just getting started on our new site, using Jomsocial and Socialize. When we try to use thememagic preview, we get this error message:
"You have navigated to another page which using another template or your current preview page does not support LESS. ThemeMagic has been temporarily disabled"
We can't change anything either, as it just shows a warning triangle.... I've hunted and hunted for a fix or an explanation of this, but cannot find one

On another note, is there any reason why the css for logo-image couldn't be:
.logo-image h1 a {
height: auto;
width: auto;
background: none;
}
Would seem more sensible to have the ability to change the size dependent on the size of the image used... what would you think?

Hi Tim,
Though it is not appearing at my local settings but It seems a bug which need to inspect.
I have informed to our developer.
Once I get any info, I will let you know.

About another issue:
please try the code

.logo-image h1 a {
height: auto;
width: auto;
background: none;
}

.logo-image h1 a  img{
height: auto;
width: auto;
background: none;
}

Thank you - I look forward to hearing back re Thememagic. In the meantime, I can use the new custom.css file to change a few bits and pieces. By the way, only this code works, as the img reference is over-ridden elsewhere. Thanks for your help.
.logo-image h1 a {
height: auto;
width: auto;
background: none;
}

All working now