I hade this same thing when I tried to copy levels from "Original Boulder Dash"levelset. I found on the forum how to make the levels normal. If in the "levelinfo.conf" you add this line:
I noticed this too, but I always assumed it was due to the intial player speed being set to as if you have picked up a speed pill.
I checked just then; the player speed is set to Fast.
Find the folder that contains the levelset you're having trouble with, and locate the levelinfo.conf within that folder. Select it and windows will give you an option to select a program from the list. Do that and select notepad or wordpad. Once the file is opened, add "latest_engine: true" (without the quotes) somewhere within the text, and then save the file.
Hope this works out.
Those who can't learn will teach; those who can't teach will learn.
Look in INITIAL PLAYER SPEED in level editor before you add "latest_engine: true" in levelinfo.conf and after.
Before I had FAST speed and after - NORMAL.
Try putting it somewhere after the file identifier. If problems persist (but, I hope they don't), could you paste the whole contents of your levelinfo.conf into your post? Good luck this time.
Those who can't learn will teach; those who can't teach will learn.