I had the same exact error with the K-Type Shield Shunt when battling above Gilead. Tried these commands to remove the augment, but couldn't get the right one. Went as far as renaming the augment file to .OLD in order to "hide" it completely but that didn't work either.
90316 [Thread-2] INFO org.lazywizard.console.Console - > sa_removeaugment shieldshunt.tk
90316 [Thread-2] INFO org.lazywizard.console.Console - The requested augment isnt present on the market.
92440 [Thread-2] INFO org.lazywizard.console.Console - > sa_removeaugment shieldshunt.kt
92440 [Thread-2] INFO org.lazywizard.console.Console - The requested augment isnt present on the market.
102616 [Thread-2] INFO org.lazywizard.console.Console - No such command "sa_removeaugment.shieldshunt" registered, did you mean "SA_removeAugment"?
125586 [Thread-2] ERROR org.lazywizard.console.Console - No such command "sa_removeaugment(shieldshunt.kt)" registered!
157436 [Thread-2] ERROR org.lazywizard.console.Console - No such command "gilead.removeaugment(shieldshunt.kt)" registered!
422194 [Thread-2] INFO org.lazywizard.console.Console - > help sa_removeaugment
422194 [Thread-2] INFO org.lazywizard.console.Console - HELP - SA_REMOVEAUGMENT
422194 [Thread-2] INFO org.lazywizard.console.Console - Tags: markets, augments
422194 [Thread-2] INFO org.lazywizard.console.Console - Syntax: SA_removeAugment (augmentId)
422194 [Thread-2] INFO org.lazywizard.console.Console - Detailed use: Removes a station augment to a market.
436968 [Thread-2] INFO org.lazywizard.console.Console - > sa_removeaugment shieldshunt
436968 [Thread-2] INFO org.lazywizard.console.Console - The requested augment isnt present on the market.
441243 [Thread-2] INFO org.lazywizard.console.Console - > sa_removeaugment "shieldshunt"
441243 [Thread-2] INFO org.lazywizard.console.Console - The requested augment isnt present on the market.
447945 [Thread-2] INFO org.lazywizard.console.Console - > sa_removeaugment shieldshunt.kt
447945 [Thread-2] INFO org.lazywizard.console.Console - The requested augment isnt present on the market.
My workaround (if someone runs into a similar issue) was to simply not join the fight until after the station was destroyed.