Search results returns blank page

[Anton]

I`m using PhpDig v.1.8.8. There is a bug in this version. Not all the search results are good. Many of them returns blank pages. In the admin "last queries" these queries are marked as emptys. Please help.

[Anton]

It`s me again. Here is an exact error message that appears on search results page:

Unable to check table. Check connection parameters.

How to fix it? Visitors are not glad to see it, and it appears very often.
There is another error message, that appears on the search results page. I haven`t writed it, I only know that it`s ending by "script".
Please, help!