We have two seperate licensed installs of Lansweeper here (as we maintain two seperate software license entities).
Both of the consoles have picked up a similar issue since I upgraded them to v4.2.0.54.
All of the currency figures in the Software license compliance screens have reverted to a $ prefix where they used to be in £. A pound sign is shown correctly in the lansweeper configuration software.
I have checked both servers are stil set to United Kingdom and checked all user registry keys for User SID\control panel\international\sCurrency to make sure they all read correctly.
A fix has been issued for this problem. Please run this installer and choose Upgrade. (We always recommend performing a database backup before applying any updates.)
Make sure to restart the machine after you've made changes to your registry currency settings.