Hello Stuart,
If you are using nested loop then $Counter$ value will repeat hence may not work as expected so we need to create manual counter in such scenario.
Regarding Automation Anywhere crashing while running the task, can you please upload the task in question so we can look into it and suggest viable solution?
Can you please provide your number and best time to reach at
Automation Anywhere - Open A Support Case so we can talk about upgrade?
Alternatively, you can reach us at 1-888-484-3535 x 3.