IMPORTANT NOTE
If you are using Wayfinder with MODx 0.9.2.1 and you are upgrading or patching to 0.9.2.2, Wayfinder 1.0 WILL BREAK YOUR SITE following the upgrade! You can fix this until a new release of Wayfinder is available that addresses the problem by replacing line 77 of the Wayfinder 1.0 snippet:
if (substr($this->modxVersion['code_name'],-4) >= 1392) {
with these two lines:
$revision= substr($this->modxVersion['code_name'],-4);
if ($revision >= 1392 && $revision != 1923) {
If you make this change to Wayfinder before upgrading or applying the patch, everything should go smoothly.