Het forum

I try to install Nextion Editor LTS and got errors:

File mismatch on downloading

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkvantage_en/-
dotnetfx.exe

also

NetFx20SP2_x86.exe

Aangepast door Juzujka

Are you using Windows Operating System? Or Any others? In the case of Windows, did you try running the setup file with administrative privilege? If not try it first. Or follow the step-by-step instructions mentioned here.