This is very weird! When it works, is it maybe because you do not focus another window while the game is loading? It is important to remain on the game window so the transparent background stuff can be done properly.
If this is not the issue, please send me the log file! You can find it in C:\Users\your user name\AppData\LocalLow\MonAmiral\Takodachi and friends, and you can send it using pastebin https://pastebin.com/