@Dominic Chui Please try issue #2 again using LS version 1.1.6 and vscode-objectscript version 1.0.11. To diagnose issue #1, I'll need the text of the routine that you're seeing the "class does not exist" error in. Please submit an issue at https://github.com/intersystems/language-server/issues with a code sample.

@Peter Steiwer This is fixed in LS version 1.1.6 and vscode-objectscript version 1.0.11. When using those versions, the LS will check if you have a local copy of the file before opening the server copy. See https://github.com/intersystems/language-server/issues/45