Simulation Pop-ups concern or ignore?

My end goal is to run a dynamic analysis on a very large system. First, I simplified the system the most that I could including making many remote masses and shells. I started analyzing my subassemblies each individually with frequency analysis and sometimes static analysis just to check the model. I have been combining the assemblies and adding complexity as I go. I have had the fun of just restarting solidworks and my "errors" go away many times. Now, that I am increasing in complexity I have the following problem. I get several pop-up windows when I try to solve the study.

"Error in transferring special loads"

OK

"One or more selected entities of sheet metal for Connections, Fixtures, and/or External Loads cannot be mapped to midsurface entity"

OK

I hit OK on both and the system appears to run ok, but should I be worried. I would prefer to fix any issue prior to adding more and more complexity and definitely prior to running the dynamic analysis. The only special loads that I can think of are my remote masses?

I tried to add more complexity yesterday and got "Frequency calculation with loads is unavailable with iterative solver. use sparse solver", which was strange considering I was using remote loads on the smaller subassemblies and had no issue. I am using iterative solver with more accurate bonding.

The DOF is 1.4M, Nodes 341k, Elements are 324k.

I am running SW 14 SP5. 32 Gig ram, Intel Xeon CPU E5-2630 v2 @ 2.6GHz Windows 7

The path name is this long.

C:\XXXXX\XXXXXXX\Projects\XXXXXXX XXXXXXXX XXX system 10-20-2014\XXX-Frequency Analysis Simplified

Any help would be appreciated because I am very behind due to: Motherboard going bad, SSD going bad, and major difference in SW14 S2 to S5. I have recovered from them all but now am really behind.

Note: found out that my support ran out without knowing about it until I needed it.

When you added more complexity, did that include sheet metal parts and additional loads? The errors sound like they are telling you that some connection/fixture/load is improperly attached to a shell entity. The error for the frequency calculation has nothing to do with the bonding condition; it has to do with predescribed loads.

1.4 million Degrees of Freedom is very high. For reference, the cut-off between the more accurate Sparse Solver and the Iterative solver is 100,000 DoF. Running such a complex mechanism all at once may be unfeasible. I would suggest running parts or sub-assemblies individually and recording their results on boundary conditions, such as where they are attached to another part, then inputting those results as base excitations in another study.