Source:
https://www.tapatalk.com/groups/nsmbxforums/mario-time-the-lost-levels-complete-t5097.html
Creator:
Darkonius Mavakar
Note:
IMPORTANT NOTE from Wohlstand: You SHOULD take the "Mario Time - The Lost Levels - Star Warp Fix.zip" archive if you ran the old episode version. Episode has a BUG because of one single level where are wrong target coordinates being set: that makes game unbeatable causing player being teleported to nowhere. If you download this episode a first time from the SMBX Archive, you can don't worry: the main archive is pre-patched.

Details about problem: https://www.smbxgame.com/forums/viewtopic.php?p=397359#p397359

How to manually fix the problem after getting stuck at middle of the lava before patching the episode:
- Get a fixed level https://smbxarchive.wohlsoft.ru/SMBX%201.3/Mario%20Time%20-%20The%20Lost%20Levels%20-%20Star%20Warp%20Fix.zip and put it at your episode's directory
- open your gamesave (save1.sav) in a text editor (before, make a backup just in a case!) [Text editor I mean NotePad. Never try use MS Word or WordPad, it just be a PLAIN text editor].
- find the 4'th line, and put the 4864 number as a value
- find the 5'th line, and put the 160 number as a value
- try to run the game