On windows:

app structure:

/
dub.json 
src/
  a.d
  b.d

-- a.d --

module a;
import b;
void main(){}

-- b.d --

module b;
import std.net.curl; // this is the problem

-- dub.json --

{
  "name": "bug",	
  "license": "Boost",
  "dependencies": {"vibe-d": ">=0.7.11"},
  "targetType":"executable"    
}

running dub from project root, builds ok, then runs and gives a dialogue box:

"The procedure entry point OBJ_bsearch could not be located in the dynamic link library libeay32.dll."

Is this a known issue? It only occurs when importing std.net.curl, and with vibe.d as a dependency (due to libeay32.dll)