ID Error Causes White Page
Entering no threadid or no article title causes white page.
While this is not normal usage, if you enter neither a t(hreadid) nor an article title in the URL, a white page will occur. According to the code, it looks like (similar to
showthread.php) it will give you a nice error message explaining that you did not request any article. After some investigation, it appears that the page output from this error occurs before the error template is fetched, so we get a blank page.
Some credit for finding this goes to
Claw Snuff who brought the white page to our attention when we had .htaccess settings that rewrote to an incorrect title variable.