Hi @MaSch
An OpenComputers program should never be able to crash your server.
Lets do a quick breakdown.
Here's your stacktrace:
Description: Exception in server tick loop
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at java.util.AbstractCollection.toArray(Unknown Source)
at com.google.common.collect.ImmutableSet.copyOf(ImmutableSet.java:374)
at elec332.core.grid.internal.GridEventInputHandler.tickEnd(GridEventInputHandler.java:91)
at elec332.core.grid.interna
You can use braille Unicode characters to give the bars more resolution as with OC font they are exactly 1/4 vert and 1/2 horiz of a full character block(the characters are "⣀", "⣤", "⣶", "⣿", "⡇")