Hi Gabriel.
Java 6 needs to be installed, along with the latest version of Adobe flash, and also ensure that you have downloaded and installed Flash for other browsers.
If you are still experiencing issues after ensuring this software is installed and up to date, please could you let us know the version of ActivInspire you are using? Launch ActivInspire and click on Help>about to get this information.
I have created a technical support case to help assist with this issue, if would like to contact us directly, please quote your reference number which is: 00429282.
Adam
Promethean Technical Support