Yesterday, when you went to a Google+ Local page, which replaced Google Places pages, and clicks from the local page on the company URL, it would take you to a Google 400 error page.

For example, if you clicked on the rustybrick.com URL in my company Google+ local page, it would take you to a 400 error page.

Here is a screen shot to explain it:

When you clicked on it, you were taken to a malformed or illegal request page:

This issue seems to have been resolved as of this morning.

Forum discussion at Google Business Forums.