Failure to boot image in EVE-NG

I am running EVE-NG on a VMware box and I am not able to make my Stealthwatch SMC/SFC images to work.

ERROR: No bootable device…

No configuration methods succeeded (http://ipxe.org/040ee119)No more network devices.
Booting from Floppy… Boot failed: could not read the boot disk

I have Stealthwatch SMC and SFC images, both with hda-001.qcow2 filenames.

Updated/upgraded the EVE-NG, installed/re-installed virtual machines several times with 4 to 8-core CPUs, 16 to 32 GB memory and 100 to 400 GB storage resource settings with no luck. Both files were checked AND VERIFIED to be good copies, just EVE-NG seems not able to boot or locate the files when I tried to start the images.

FIX: Rename the qcow2 files!

Renamed both files to hda.qcow2, eliminating all other characters, re-uploaded the files and reloaded the EVE-NG Lab. Then both SMC and SFC images restarted successfully.