BUG: Access violation reading location 0xfeeefeee (decals do it!!)

const U32 DecalManager::smMaxVerts = 6000;
const U32 DecalManager::smMaxIndices = 10000;

mPrimBuffs.reserve( batches.size() );
   mVBs.reserve( batches.size() );

Vector<DecalBatch> batches;
   DecalBatch *currentBatch = NULL;
   
//start here?
   mPrimBuffs.reserve( batches.size() );
   mVBs.reserve( batches.size() );
//end here?

   // Loop through DecalQueue collecting them into render batches.
   for ( U32 i = 0; i < mDecalQueue.size(); i++ )
   {
      DecalInstance *decal = mDecalQueue[i];      
      DecalData *data = decal->mDataBlock;
      Material *mat = data->getMaterial();

//<----- New from here ------->

   // Make sure our primitive and vertex buffer handle storage is
   // big enough to take all batches.  Doing this now avoids reallocation
   // later on which would invalidate all the pointers we already had
   // passed into render instances.
   
   mPrimBuffs.reserve( batches.size() );
   mVBs.reserve( batches.size() );

   //<----- To here ------->

   // Loop through batches allocating buffers and submitting render instances.
   for ( U32 i = 0; i < batches.size(); i++ )
   {
      DecalBatch &currentBatch = batches[i];

      // Allocate buffers...

// Make sure our primitive and vertex buffer handle storage is  
  // big enough to take all batches.  Doing this now avoids reallocation  
  // later on which would invalidate all the pointers we already had  
  // passed into render instances

// Loop through batches allocating buffers and submitting render instances.  
    for ( U32 i = 0; i < batches.size(); i++ )  
    {  
       DecalBatch &currentBatch = batches[i];