Android Question Install Fails

Uninstall everything and delete the folders, then follow the instructions in the link below to the letter, do not install into previously installed folders.
https://www.b4x.com/android/forum/threads/where-is-android-27.88341/#post-559007

Carl Foerster said:

"Missing jar file from library, C:\android\toos\lib\devices.xml"

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This error suggests that you set the additional libraries folder to Android SDK folder. This is a mistake.

As Peter wrote you should reinstall Android SDK. Instructions: https://www.b4x.com/b4a.html#installation

Problem fixed. For reference, I didn't recognize that the SDK manager couldn't reach the appropriate sites to get the required files. Probably a proxy problem which I solved by going off the protected network. It wasn't obvious because it loaded one file, then failed so I assumed it was reaching the site.