# FAQ

### How is this add-in written?

The code is written entirely in Java to run on all platforms and processor architecture supported by HCL Domino. Once loaded, the add-in stays in the background waiting for server console commands. The open source [JAddin Framework](https://jaddin.abdata.ch) is used to interface between the HCL Domino Server and the DSAK Java class.

### Error "RunJava: Can't find class ..." or "JAddin: Unable to load Java class ..."

Make sure you have typed the *Load RunJava JAddin DSAK* command with correct upper-/lowercase characters. All Java class names are case-sensitive (see [Installation and Usage)](https://dsak.k43.ch/quick-start/installation-and-usage).

### How do I get informed about new versions?

DSAK checks the availability of a newer version during startup and writes a message to the server console if a new version is ready to download. This check is done with a standard HTTPS request to <https://k43.ch> (port 443).