Coverage fails to compile on second pass

I am working on a large project and not able to successfully run the coverage. The error seems to occur on compilation of the openzeppelin library in preparation for the tests. All the truffle tests should pass.

Writing artifacts to ./build/contracts

Running: truffle test --network coverage
(this can take a few seconds)...
Using network 'coverage'.

Compiling ./test/helpers/contracts/PolyToken.sol...
Compiling openzeppelin-solidity/contracts/math/SafeMath.sol...
Compiling openzeppelin-solidity/contracts/ownership/Ownable.sol...
Compiling openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol...
Compiling openzeppelin-solidity/contracts/token/ERC20/ERC20.sol...
Compiling openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol...
Compiling openzeppelin-solidity/contracts/token/ERC20/MintableToken.sol...
Compiling openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol...

Compilation warnings encountered:


openzeppelin-solidity/contracts/math/SafeMath.sol:13:3: Warning: Function state mutability can be restricted to pure
  function mul(uint256 a, uint256 b) internal  returns (uint256 c) {
  ^ (Relevant source part starts here and spans across multiple lines).
,openzeppelin-solidity/contracts/math/SafeMath.sol:29:3: Warning: Function state mutability can be restricted to pure
  function div(uint256 a, uint256 b) internal  returns (uint256) {
  ^ (Relevant source part starts here and spans across multiple lines).
,openzeppelin-solidity/contracts/math/SafeMath.sol:39:3: Warning: Function state mutability can be restricted to pure
  function sub(uint256 a, uint256 b) internal  returns (uint256) {
  ^ (Relevant source part starts here and spans across multiple lines).
,openzeppelin-solidity/contracts/math/SafeMath.sol:47:3: Warning: Function state mutability can be restricted to pure
  function add(uint256 a, uint256 b) internal  returns (uint256 c) {
  ^ (Relevant source part starts here and spans across multiple lines).

Error: Invalid number of arguments to Solidity function
    at Object.InvalidNumberOfSolidityArgs (/Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/web3/lib/
web3/errors.js:25:1)
    at SolidityFunction.validateArgs (/Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/web3/lib/web3/
function.js:74:1)
    at SolidityFunction.toPayload (/Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/web3/lib/web3/fun
ction.js:90:1)
    at SolidityFunction.sendTransaction (/Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/web3/lib/we
b3/function.js:163:1)
    at SolidityFunction.execute (/Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/web3/lib/web3/funct
ion.js:256:1)
    at /Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/truffle-contract/contract.js:204:1
    at new Promise (<anonymous>)
    at /Users/stephanegosselin/github/polymath-core/node_modules/truffle/build/webpack:/~/truffle-contract/contract.js:155:1
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:182:7)
-------------------------------------------|----------|----------|----------|----------|----------------|
File                                       |  % Stmts | % Branch |  % Funcs |  % Lines |Uncovered Lines |
-------------------------------------------|----------|----------|----------|----------|----------------|
 contracts/                                |     23.2 |     7.32 |     27.5 |    23.85 |                |
  ModuleRegistry.sol                       |       50 |    21.43 |    33.33 |    46.15 |... 116,126,133 |
  Pausable.sol                             |     12.5 |     12.5 |       25 |       20 |... 35,42,43,44 |```

[thegostep]

Yes! That was it. Thank you for catching my slip up.

[cgewecke]

@thegostep Oh good, glad it works.