Hi Mostapha, hi guys!
I am working on a project in Tromsø, Northern-Norway. I found climate data on https://www.byggforsk.no/side/56/tek-sjekk_energi (under “Klimadata”), but i.m attaching it too.
I was facing several problems during importing it to Ladybug, I renamed .EPW to .epw, removed the “ø” character, but still it.s missing mtx files.
I.m kinda out of ideas, can you take a look on it?
NOR_Nordland_Troms-Langnes_v140821.epw (1.49 MB)
Try deleting the spaces in the name of the file.
-A.
Even though I rename the epw files, he creates a new set in C:\Ladybug with other names (with “ø”), and without the mtx files
This is the result after renaming the original file to “tromso.epw” 
I didn.t find where can I change these mechanics. Or if still the “ø” is the problem.
The problem is inn the header of the EPW file.
Edit the file with any text editor program and replace this letter for something like “o” (Tromso).
It will work.
-A.
This was it.
Million thanks! 