I can't activate just:in multi, what can I do?

• please check that you have the read/write permissions on the /Library/Application Support/ToolsOnAir directory. if not, please change them accordingly.

• please make sure that you have the correct activation code for either version 1.7.x/1.8.x - 2, 2.5 or version 3. Each version has its own activation code scheme. 

If it's still not working please create a ticket in our support system, and we will reply as soon as possible.