# Changing default extension from html to php lets RW 8.7 crash **URL:** \ **Category:** RapidWeaver Classic\ **Created:** [November 20, 2020, 3:20pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776 "2020-11-20T15:20:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Franz](https://avatars.discourse-cdn.com/v4/letter/f/c37758/32.png) [@Franz](https://forums.realmacsoftware.com/u/Franz)\ **Post date:** [November 20, 2020, 3:20pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/1 "2020-11-20T15:20:54Z")
I tried to change the default extension in a new project after I had already added a few pages. As soon as I type “ph”, RW crashes. Does this mean I can only change the default extension when I start a completely new project or is there something not working properly here? ---
**Author:** ![teefers](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/teefers/32/8173_2.png) [@teefers](https://forums.realmacsoftware.com/u/teefers)\ **Post date:** [November 20, 2020, 5:11pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/2 "2020-11-20T17:11:57Z")
> [@Franz](#): > > Does this mean I can only change the default extension when I start a completely new project or is there something not working properly here? I’m able to change mine to anuthing, tested on multiple projects and no problem here. - RW Version 8.7 (20860) - macOS Mojave 10.14.6 (18G6032) ---
**Author:** ![Franz](https://avatars.discourse-cdn.com/v4/letter/f/c37758/32.png) [@Franz](https://forums.realmacsoftware.com/u/Franz)\ **Post date:** [November 20, 2020, 5:38pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/3 "2020-11-20T17:38:28Z")
Thanks, Doug. But it is not so with my setting. RW Version 8.7 (20860) MacOS Mojave 10.14.6 I try to change the default in “Advanced” settings. I did a restart of my iMac, opened the project, typed “ph” instead of “html” - crash! ![screenshot_1550](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/a/b/ab336b2b9816124d1efc0ba1240b9ae31dbc6e97.jpeg) Well, I just tried a completely new project - it even crashes here! So, something is not right here… ---
**Author:** ![Rovertek](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/rovertek/32/223_2.png) [@Rovertek](https://forums.realmacsoftware.com/u/Rovertek)\ **Post date:** [November 20, 2020, 6:15pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/4 "2020-11-20T18:15:08Z")
Perhaps reinstalling RW from freshly downloaded file would cure this situation? ---
**Author:** ![Pyrobrit](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/pyrobrit/32/14665_2.png) [@Pyrobrit](https://forums.realmacsoftware.com/u/Pyrobrit)\ **Post date:** [November 20, 2020, 6:48pm UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/5 "2020-11-20T18:48:35Z")
Worked OK for me although you do get a pop up warning if you delete the “html” text before typing “php”. No warning if you just overtype. ---
**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/system/32/25301_2.png) [@system](https://forums.realmacsoftware.com/u/system)\ **Post date:** [December 21, 2020, 4:48am UTC](https://forums.realmacsoftware.com/t/changing-default-extension-from-html-to-php-lets-rw-8-7-crash/35776/6 "2020-12-21T04:48:47Z")
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