I haven't messed with anything. I just tried to load a ship to move it's core but it didn't work. After that i tried loading other blueprints that could be loaded before but it still couldn't do it.
Here is a pic of it: The error is on the bottom left corner.
Let's get the debug info. Since the debug tools for SMedit Classic don't save the errors to a file, we have to do it a bit differently.
Open a command prompt (known also as DOS, but it really isn't ever since Vista came out) and navigate (in the prompt with cd command. If you don't know how to work a DOS prompt with commands, please let me know) to your StarMade folder. Type the following into the command prompt: java -d64 -jar jo_sm.jar
This command will call Java to run jo_sm.jar in 64-bit mode (-d64 is how java activates 64-bit memory mapping, otherwise it runs it in 32-bit with heavy memory allocation limitations). You should see the command prompt window scroll through a few lines of technical stuff as the SMedit launcher is loaded.
When the launcher is loaded, set your memory allocation preferences as usual and start SMedit proper. The command prompt window will remain open and be the main debug output window at this point and closing the command prompt window will actually close SMedit as well, so don't touch it yet.
Try to load a ship into SMedit and pay close attention to what the command prompt window spits out. It should be outputting a lot of nearly nonsensical babble about what it tried to do, so ignore that part for the moment and scroll up to the nearest line in the command prompt output that mentioned a file path it tried to load. Copy (copy works differently in DOS than in Windows in general, you have to do it from the window's icon in the upper left corner) the text and paste it into a text editor and trim out everything above the file path of the problem ship (its not relevant right now). This is the chunk of text you want to paste in here. Alternatively you can screenshot the command prompt's output with the window resized to show as much text as possible (it can only be resized so much before it won't let you and you certainly can't maximize it to fullscreen status) so Bobby and perhaps Jo (more likely Bobby) can look at it and start trying to work out what happened and how to fix it.
At the moment all that screenshot does is tell me it couldn't load a chunk segment so the operation failed.