You must have DirectX 8.1 or higher to run Legend of OZ.
First, make sure you computer meet the requirements. Also make sure you have enough free hard drive space, size of the quest just to play, and each save game takes up size of the quest again (rough guesses).
The most like cause is that of a scripting error that has got past the compiler like sending the wrong type of argument via a CallFuntion(). Check the scripts you have edited after you last test.
Sometime Audio could be the problem, so try testing without sound, you can turn it off in Quest Properties.
Lastly Legend of OZ doesn't handle quests with alot of content, like having too many entities would cause the save system not to function.
Try the following things first:
You can't. But you could rename the quest to default.qst and place in the quests directory, and it would be loaded at startup. A program called ResHack can be use to change the icon and remove "Load Quest" from the menu.
These represents holes, red H1 are normal holes, green h2 allow player to fall to a lower level.
The green h2 holes lower level can be set via scripting with SetLowerLevel
First you must move the BMP and SPT (if include) files to the sprite sheet directory. In QD, select Quest Resources > Graphic Manager. To add an alreadly made sprite sheet right click on folder you want to add it to (note: "Sprite Sheet in Project:" is the root folder). If a SPT wasn't include you click on the "Create New" button.
First you must move the ZES files to the entity directory. In QD, select Quest Resources > Entity Manager. Then right click on folder you want to add it to (note: "Entities in Project:" is the root folder).
First you must move the music file (preferably IT) to the sounds folder in the QD folder. Then select Sound Manager in the Quest Resources menu in the QD. After that, right click on the Music folder and select Add File to Folder . Now choose IT file type and select the music file and click Open. To change the default music of a group, select a screen on the map and choose Edit Group . Then select the Group's Music from the list.
Go to the QD menu, find Options->Quest Properties there's a Player Starting Position section there. The coordinates have to be in world coordinates. To get these, just edit the screen you want the player to start on, put the cursor where he should start and the coordinates should be given on the right of the screen. Every screen is 320x240 pixels. World coordinates are relative to the upper-left hand corner of the map - the counting starts on screen (0, 0) and every screen east and south you add 320 and 240. Example: in middle of (2, 3) the world coordinate is: (2.5*320, 3.5*240) = (800, 840).
These Quest were written for Open Zelda 6.2.4, and haven't been updated to support new features