Open up the following file in a text editor:

C:\Program Files (x86)\Inflectra\Rapise\Engine\SeSExecutor.js

Locate the following section:

 // Execute test with 10 minutes timeout
 var result = g_util.Run(commandLine, null, 10 * 60000, true);

and change the value of 10 * 60000 to a larger value (in milliseconds).

Regards

Adam