What I can tell you is that there are some slots that require special files to be present in the .szs archive. Slots that will crash are slot 4.2 (Moonview Highway) and 6.2 (GBA Shy Guy Beach). The slots you tried are supposed to work. Perhaps there still is something wrong with your converter, as I can not think of something else then a issue somewhere in your .szs file.
I think what you should try first is to download a course .szs file from wiki.tockdom.com and place that. Take for example 3DS Rainbow Road (one of my personal favourites). http://wiki.tockdom.com/wiki/3DS_Rainbow_Road The file is already renamed, just copy it, patch iso and try Special Cup - Rainbow Road. Tell if this does not work either.
Be sure to use correct names. (beginner_course.szs and treehouse_course.szs). If you want to know, I replaced Luigi Circuit with SNES Mario Circuit 1 successfully. Of course other tracks should work too.
For if you want to play the custom tracks in multiplayer, you should also copy your downloaded .szs as beginner_course_d.szs and treehouse_course_d.szs .
Let me point out one more thing: if your are looking for a set of custom tracks or retro tracks from other MarioKart games to play in Dolphin, you shouldn't replace files etc. yourself. Wiimm has created a lot of distributions that come with an iso patcher. Take a look here: http://wiki.tockdom.com/wiki/Wiimms_Mario_Kart_Fun These distributions are hacked just so you have 40 cups; so you will have around 160 tracks per distribution. Readme with how to create a MKW Fun iso is included in the package, you will need your LEGALLY OBTAINED (of course) MKW iso to create a MKW Fun iso.
This is way less time consuming. Of course, if you want to make your own, go ahead. If it's just about playing the tracks, use Wiimm's.
410172
I think what you should try first is to download a course .szs file from wiki.tockdom.com and place that. Take for example 3DS Rainbow Road (one of my personal favourites). http://wiki.tockdom.com/wiki/3DS_Rainbow_Road The file is already renamed, just copy it, patch iso and try Special Cup - Rainbow Road. Tell if this does not work either.
Be sure to use correct names. (beginner_course.szs and treehouse_course.szs). If you want to know, I replaced Luigi Circuit with SNES Mario Circuit 1 successfully. Of course other tracks should work too.
For if you want to play the custom tracks in multiplayer, you should also copy your downloaded .szs as beginner_course_d.szs and treehouse_course_d.szs .
Let me point out one more thing: if your are looking for a set of custom tracks or retro tracks from other MarioKart games to play in Dolphin, you shouldn't replace files etc. yourself. Wiimm has created a lot of distributions that come with an iso patcher. Take a look here: http://wiki.tockdom.com/wiki/Wiimms_Mario_Kart_Fun These distributions are hacked just so you have 40 cups; so you will have around 160 tracks per distribution. Readme with how to create a MKW Fun iso is included in the package, you will need your LEGALLY OBTAINED (of course) MKW iso to create a MKW Fun iso.
This is way less time consuming. Of course, if you want to make your own, go ahead. If it's just about playing the tracks, use Wiimm's.
410172

![[Image: hhMMMgO.png]](http://i.imgur.com/hhMMMgO.png)