On Aug 25, 2009, at 11:35 AM, Yan Zhou wrote:

Whenever I try to Typesetting the LateX file, which compiled properly  
using command line or using TextMate on 10.5, I got the error message
"Could not open to check for packages
This is most likely a problem with
TM_LATEX_MASTER"

I am sure this is not a problem with the TM_LATEX_MASTER". First I am  
trying to typeset a single file rather than a project. Second with  
nothing changed, this file typeset perfectly on 10.5 with TextMate.

Does anyone have the same problem or can provide some clue for solution?

See: http://ticket.macromates.com/show?ticket_id=FAB08510

What worked for me: 
1. remove any Latex.tmbundle in ~/Library/Application Support/TextMate/Bundles (thus reverting to the original bundle)
2. Somewhere in ~/Library/Application Support/TextMate/ (I think Support/lib……) is a file called tm_interactive_input.dylib -- rename that to whatever you want
3. Rename /Applications/TextMate.app/Contents/SharedSupport/Support/lib/tm_interactive_input.dylib to whatever you want

Niels