i get this error when i try to upgrade my 3850 stack. i have tried using a fresh config, loading from USB, copy from USB to flash. same result.
Preparing install operation ...
[1]: Copying software from active switch 1 to switch 2
[1]: Finished copying software to switch 2
[1 2]: Starting install operation
[1 2]: Expanding bundle flash:cat3k_caa-universalk9.SPA.03.07.02.E.152-3.E2.bin
[1 2]: Copying package files
[1 2]: Package files copied
[1 2]: Finished expanding bundle flash:cat3k_caa-universalk9.SPA.03.07.02.E.152-3.E2.bin
[1 2]: Verifying and copying expanded package files to flash:
[1 2]: Verified and copied expanded package files to flash:
[1]: % Failed to create candidate tree. Operation aborted.
[1]: % An internal error was encountered. Operation aborted.
[2]: % An internal error was encountered. Operation aborted.
please advise.
