Decrypt Method throwing error: "Object reference not set to an instance of an object"

[carthax12]

Using version 1.0.1.3

My code is here:
using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt()) { EncryptionViewModel pem = rpt.Encryption_In; var from = setFiles.FileToProcessPath + setFiles.FileToProcess; var to = setFiles.ProcessedPath + setFiles.ProcessedName; if (from == to) { to = setFiles.ProcessedPath + "_" + setFiles.ProcessedName; pgp.DecryptFile(from, to, pem.PEMPath, pem.PassPhrase); File.Delete(from); File.Move(to, from); } else { pgp.DecryptFile(from, to, pem.PEMPath, pem.PassPhrase); } }

In this case, the file name I am decrypting is the same as the file name I want to send on to the customer (this is an EDI application), so I am renaming the To file to _To, doing the Decrypt, then deleting the From file and renaming _To to From.

My stack track is here:

at Cinchoo.PGP.ChoPGPEncryptDecrypt.Decrypt(Stream inputStream, Stream outputStream, Stream privateKeyStream, String passPhrase) at Cinchoo.PGP.ChoPGPEncryptDecrypt.DecryptFile(String inputFilePath, String outputFilePath, String privateKeyFilePath, String passPhrase) at EDI2.Data.Process_Unencrypt_File.Process(ReportAllDataViewModel rpt) in C:\TWRAProjects\EDI2\EDI2\Data\Data_Process.cs:line 544

This has been working. I have verified the From file exists, the To file does not, and that my pgp and pem references are valid. I have verified that the pem.PEMPath and pem.PassPhrase variables are filled, and are correct.

The Encrypt process is still working just fine. I encrypt three or four files per week for my customers.