Here is a copy of the transaction log. I've done  a region restart, rezzed a new exchange reset it etc but still same problem
[00:56] VivoSim Exchange - BETA 6.11: Found  SF Tomato Sauce, emptying
00:56] VivoSim Exchange - BETA 6.11: Sorry, transaction failed, please try again later
[00:56] VivoSim Exchange - BETA 6.11: *** SF SF Tomato Sauce not in my Inventory***
[00:58] VivoSim Exchange - BETA 6.11: Here is your purchase of Rum.
You have been charged 175 Coins
[00:58] SF Rum: Looking for SF Barrel Store
[00:58] VivoSim Exchange - BETA 6.11: Found  SF Rum, emptying
[00:58] VivoSim Exchange - BETA 6.11: Sorry, transaction failed, please try again later
[00:58] VivoSim Exchange - BETA 6.11: *** SF SF Rum not in my Inventory***
[01:03] VivoSim Exchange - BETA 6.11: Found  SF Milk, emptying
[01:03]...

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