Error after installation in device

[Nanda]

hi Lumerical team,

I installed device trail version the key is activated but software is not working the error is attached in below image

but the activation file is showing activated option node locked licence

kindly help me in sorting this problem’

with thanks

[pjain]

This issue occurs due to the graphics card settings or the graphics card is unable to render the default settings used. To resolve this issue, we have the following the link for related article on our KX.

Device crashes and cannot open

This has been updated, with v2019a. When using DEVICE version 2017a and higher and the graphical interface is slow or lagging. Sometimes, DEVICE crashes and you are unable to launch or open DEVICE. This might be due to the graphics card settings or the graphics card is unable to render the default settings used. Please refer to the updated KX article:

[Nanda]

thank you for reply
problem solved using your procedure
once again thanks to you Pjain.