REngine initialization (Mono + OSX, R 2.15 32bit) - Console app works - Type provider crashes (added a script file with #r to it)

Console.fs

namespace rtest

open System
open RDotNet

[<AutoOpen>]
module Init =
    let initR() =
        let rpath = "/Library/Frameworks/R.framework/Libraries"
        let rresources = "/Library/Frameworks/R.framework/Resources"

        let oldpath = Environment.GetEnvironmentVariable "PATH"
        Environment.SetEnvironmentVariable("PATH", sprintf "%s:%s" rpath oldpath)

        Environment.SetEnvironmentVariable("R_HOME", rresources)

        let engine = REngine.CreateInstance("RDotNet")
        engine.Initialize()

        let e = engine.Evaluate("1 + 3");
        e.AsNumeric()
        
    [<EntryPoint>]
    let main args =
        initR() |> printfn "%A" //seq [4.0]
        0

TypeProvider.fs

// type provider library

namespace rtest

open Microsoft.FSharp.Core.CompilerServices
open Samples.FSharp.ProvidedTypes


[<TypeProvider>]  
type RProvider(cfg: TypeProviderConfig) as this = 
    inherit TypeProviderForNamespaces()
    
    let asm = System.Reflection.Assembly.GetExecutingAssembly()
    let ns = "REngineRepro"
    let ty = ProvidedTypeDefinition(asm, ns, "R", Some typeof<obj>)
    
    do
        initR() |> ignore
        this.AddNamespace(ns, [ty])

[<TypeProviderAssembly>]
do ()