Java project can't find jar/dlll file

I have a solution with 50+ projects. Two of them are java projects. I removed and re-added one or the other of the java projects. The main java project is a console app that references the other java class library project. The java class library compiles file and creates a jar file. But the project that references says it can’t find the DLL?

Error	9	(E24) Could not load referenced assembly "SandWNetEncrypt.dll": Could not find file 'C:\Users\Mark\Documents\Visual Studio 2013\Projects\SW\GuardianEditObservation\StringEncryptDecryptDoneForJaspersoft\Encryption\consoleapplication7\consoleapplication7\SandWNetEncrypt.dll'.		0	0	SandWJavaDecryptTest

How can I get this main project to compile again. I think it thinks it is .net or something. Is there a file for this that I can delete or rename or recreate or something?

The icon in the solution tree for the two java projects are YELLOW if that is significant.

Never mind, I got it. I had a reference to a .Net assembly in there where I shouldn’t have. For some reason, the solution wasn’t showing it. But when I closed the solution and re-opened it, now it is showing the inappropriate .net reference which I could remove.