DRAC5 unable to upload server certificate

I'm unable to replace the Dell self-signed SSL certificate with a self-signed certificate of my own.
I'm probably missing something because the steps I've done sofar seem straightforward.

 

Has anyone else succesfully replaced the DRAC5 certificate with a self-signed certificate?

 

What i'v done sofar:

 

In the DRAC5 webinterface, Configuration SSL MainMenu
-Generate a New Certificate Signing Request (CSR)
 Fill in the necessary info (common name etc.)
 Save as D:\OpenSSL\csr.txt

 

Using OpenSSL 0.98
-Generate a private key
 openssl genrsa -out privkey.txt 1024 base64
-Generate a self-signed certificate
 openssl x509 -req -days 7300 -in csr.txt -signkey privkey.txt -out crt.txt

 

In the DRAC5 webinterface, Configuration SSL MainMenu
-Upload server certificate
 FilePath: D:\OpenSSL\crt.txt

 

Result: Attempted to upload an invalid certificate.

 

I also tried concatenating the certificate and the private key, resulting in a "pem" format:
-Copy the certificate + private key to server.pem
 copy crt.txt+privkey.txt crt.pem

 

In the Configuration SSL MainMenu
-Upload server certificate
 FilePath: D:\OpenSSL\crt.pem

 

Result: Attempted to upload an invalid certificate.

 

Thanks in advance.