printer only recognises g-code that came preloaded on sd-card
I am able to print the example files that came preloaded onto the usb. Now I have installed PrusaSlicer and imported my .STL/.3MF file that I made in Shapr3D and I can successfully sliced the model ad preview it without issues in the G-code viewer, but then I try to open it with the 3D printer, it doesn't show a preview like it does for the other gcode files, and when I press 'Print', it just sits there doing nothing for a few minutes then the print icon changes to Reprint.
I've double checked the printer settings and they are identical to the examples. If anyone has any ideas what is the problem here I would really appreciate it
RE: printer only recognises g-code that came preloaded on sd-card
try importing and slicing an STL that wasn't made in Shapr3d, see if that slices and prints ok.
the issue, may be with the shaper stl's
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE:
Feel free to save the project from Prusaslicer as a 3mf file, zip compress it and attach it to a post here. That way we can check the STL as well as all your settings for issues.
RE: printer only recognises g-code that came preloaded on sd-card
I have tried using an .stl from another software but it's the same issue
RE: printer only recognises g-code that came preloaded on sd-card
Have you tried printing the part 'Clip' without all of the modifications to the prusa profile?
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: printer only recognises g-code that came preloaded on sd-card
what modifications are you referring to? I simply opened the stl and pressed Slice I didn't modify anything
RE: printer only recognises g-code that came preloaded on sd-card
I don't see anything obviously wrong with the model or the settings. Just trying to check off all the boxes: Are you running firmware 5.0.0 on the Mk4?
RE: printer only recognises g-code that came preloaded on sd-card
In Prusa slicer the right hand window shows there are modifications in each section
the three red ovals show the word modified!
then in Printer settings 
the RED Unlocked locks indicate where changes were made by someone
Again red unlocked lock indicates a change
again unlocked lock shows changes
If you click on the red lock, it should change to grey, and restore the normal defaults
slicing with a prusa default profile, should result in a reasonable print, once you have a reasonable print, you can consider making changes, if they are required. and see what happens.
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: printer only recognises g-code that came preloaded on sd-card
Yes the firmware is the latest and I do not see those modifications when I use PrusaSlicer. 
RE: printer only recognises g-code that came preloaded on sd-card
Hi Ben,
Have you got a print to print yet? If not,
Please try the attached Gcode (Clip JT.Gcode)
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: printer only recognises g-code that came preloaded on sd-card
In Prusa slicer the right hand
Huh, I don't see any of those when I open the 3mf the OP uploaded with PS 2.6.1.
RE: printer only recognises g-code that came preloaded on sd-card
I tried updating the firmware with a .bbf file from the USB drive but my printer says its an unsupported bbf file. That's not making any sense to me, it seems to be having an identity crisis.
Using Prusa Link over Ethernet connection I am able to get it to work, although its extremely slow to start working.
RE: printer only recognises g-code that came preloaded on sd-card
I think the issue is because I'm using a company PC. It's possible that it encrypts anything loaded onto the USB drive so third parties can't read anything back only devices on my company's network
Thank you for the help
RE: printer only recognises g-code that came preloaded on sd-card
In Prusa slicer the right hand
Huh, I don't see any of those when I open the 3mf the OP uploaded with PS 2.6.1.
odd...
i reloaded the file several times...
each time same issues,
I am also using PS2.6.1
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: printer only recognises g-code that came preloaded on sd-card
Call me a simpleton, but.. Could it be because your sliced file has the suffix ".g" instead of normally ".gcode" ???
RE: printer only recognises g-code that came preloaded on sd-card
Joan the profiles in the 3mf are just different from the versions you have on your computer. They are the same named profiles which is why yours mark the differences. I’ve seen it before when opening other 3mf files.