Error detected while processing

[mimecuvalo]

Hi, I'm using MacVim and it includes your great less.vim work. However, every time I open up a .less file I get this error:

Error detected while processing /Applications/MacVim.app/Contents/Resources/vim/runtime/syntax/less.vim:
line   17:
E409: Unknown group name: cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRender
Prop
E475: Invalid argument: cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRenderPr
op
E400: No cluster specified
E475: Invalid argument: lessCssAttributes contains=css.*Attr,lessEndOfLineComment,lessComment,cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cs
sError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRenderProp
E409: Unknown group name: cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRender
Prop
E475: Invalid argument: cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRenderPr
op
E400: No cluster specified
E475: Invalid argument: lessCssAttributes contains=css.*Attr,lessEndOfLineComment,lessComment,cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cs
sError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRenderProp

Commenting out this line in less.vim fixes the problem:

syn cluster lessCssAttributes contains=css.*Attr,lessEndOfLineComment,lessComment,cssValue.*,cssColor,cssURL,lessDefault,cssImportant,cssError,cssStringQ,cssStringQQ,cssFunction,cssUnicodeEscape,cssRenderProp

[mimecuvalo]

The problem is specifically something with css.Attr and cssValue. btw
Thanks!