Do not install EleksCAM in ProgramFile directory. The software need to read and write parameters in a SQLite database and can't do it because this directory need admin privileges for writing. Install it anywhere else where you have write access.
What version is your board ? If Mana SE, Be sure to connect Y1, Y2, X to the good place
if you are based in the UK - look up "We-do-3d-printing"
The material you require is "2040 V-Slot-6" extruded aluminium, for the X Carriage rail, & you can make the machine as wide as you want.
This lot also sell wire kits to make the motor & laser cables to any size you want.
Alternatively use Dupont cables & connectors, which you can get in a variety of lengths to extend your existing cables - ebay & cheap too.
Hope this helps.
J'ai trouvé il faut télécharger T2laser un logiciel et faire la mise à jour de firmware à partir de celui.
J'ai passé un peu temps à gratter.
Après lancer ELEKSCAM fonctionne
Grbl 1.1 firmware is better, you get smoother and faster motion as well as features like Dynamic Laser power and real time overrides. It won't work with the obsolete Eleks software but you can use T2Laser.