How do you mean it won't recognize the files?
They don't show up on your SD card?
- Maybe your SD card is faulty. Do you do save removals?
- Are you using the custom SD card, different brands not always work.
Does it say the file will overrule some settings?
- Are you sure the files you have sliced are sliced for the Ultimaker 2?
In Cura you have the option to slice for every member of the Ultimaker family.
Perhaps it was set to a different machine.
If you can give a little bit more details on what is happening it will probably guide us in the right direction.
Did you install the arduino drivers (when installing Cura)?
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