I'm getting the same error:
The mod Belt Reverser Fixed (0.1.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event belt-reverserup-fixed::ReverseEntireBelt (ID 200)
belt-reverserup-fixed/flipBeltLines.lua:19: 'for' limit must be a number
stack traceback:
belt-reverserup-fixed/flipBeltLines.lua:19: in function 'replaceBeltLane'
belt-reverserup-fixed/flipBeltLines.lua:10: in function 'flipBeltLines'
belt-reverserup-fixed/control.lua:211: in function 'reverseBelt'
belt-reverserup-fixed/control.lua:226: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:225: in function 'reverseDownstreamBelts'
belt-reverserup-fixed/control.lua:238: in function <belt-reverserup-fixed/control.lua:230>