# 9. Troubleshooting¶

The following shows some of the most frequently seen errors and their solutions for quick reference. For other issues that happened during the installation, upgrading or later usage, you may seek Technical support by submitting a bug report to PicoScenes Issues Tracker.

Q: I have successfully installed the PicoScenes software, however, I always encounter “[Warning] Incompatible kernel version, current version: XXX, expected version: YYY.” problem.

A: The possible reason is that the PicoScenes repository is updated, but your local apt cache is not synced. To fix this error, you should run sudo apt update to sync your local apt cache. If you still encounter this problem, you may seek Technical support.
A: run sudo /usr/lib/uhd/utils/uhd_images_downloader.py to download all USRP images.