error: expected first parameter to be a hash table

[Federico Galetto]

Hello.

I am trying to install one of my packages from a local file and I am having some issues. The offending lines are:

action = method(TypicalValue=>Action,
    Options=>{Sub=>true,Semidirect=>(bracketize,identity)})

action(ChainComplex,List,List,ZZ) := ActionOnComplex => op -> (C,l,l0,i) -> (

........

The error is:

error: expected first parameter to be a hash table

Sorry for the limited context, but I do not understand what the problem might be. Any thoughts?

Thank you,

Fred

[Mahrud Sayrafi]

The first parameter, ChainComplex, is no longer exported from Core, so if your package depends on it you must add "OldChainComplexes" to the PackageExports list, or you can transition to using the Complex type and add "Complexes" to that list instead.

Mahrud

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[Federico Galetto]

Great, thank you so much! Exporting "Complexes" and changing all instances of ChainComplex to Complex did the trick.