Error in opening Newick-format file

Hi,

I get the following error while trying to open a newick-format file: Bio.Phylo.NewickIO.NewickError: Number of open/close parentheses do not match.

I've worked on this file in the past (late March), and it worked just fine. The Bio module was updated recently (to version 1.66), and I thought the change in versions was the issue. But, when I installed and ran version 1.65, I still get the same error. I don't think the version has change from late March till now.

This might be a trivial problem. I'd appreciate any help with this.

Thank you.
Vasavi