I have never had this issue before but I am working on a site and implimented a simple search form like this:
{exp:search:simple_form channel="about" result_page="site/search"}
<label for=“keywords”>Search:</label>
<input type=“text” name=“keywords” id=“keywords” value=”” size=“18” maxlength=“100”>
<input type=“submit” value=“submit” class=“submit”>
{/exp:search:simple_form}
When I enter a search term and click submit I get a blank page that says:
“Safari can’t open this page mytesturl.comPECENTSIGN20/ because the page’s address isn’t valid”
And see that it is in fact trying to go to mytesturl.comPECENTSIGN20/
This makes no sense - tried a few things but no luck yet. Any thoughts?