Cannot connect to Cisco ASA through SSH using PuTTY

I am trying to connect to my Cisco ASA5505 through SSH using PuTTY from my inside LAN.  I can use Telnet with no problem, but I keep getting the attached error immediately upon attempting a SSH connection.  

PuTTY SSH connection error
I have done the following SSH configuration on my ASA:

crypto key generate rsa modulus 1024
ssh inside-interface 255.255.255.0 inside
ssh timeout 20
ssh version 2


The authentication has also been set to go through the LOCAL database.  On the PuTTY side, Blowfish encryption has been moved ahead of AES (SSH-2 only) (I read online that this was a known issue), and SSH version 2 is set as the preferred version.  What could be causing this issue??  Have I left out something??  Someone please help me with this.
Dustin23IT DirectorAsked:
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Jan SpringerCommented:
Do you have aaa configured?
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Dustin23IT DirectorAuthor Commented:
Yes.  It has been used in production for more than a year.
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lruiz52Commented:
do you have a domain-name set on your ASA? it is needed for rsa to work properly

hostname Name_of_ASA
domain-name Name_of_Domain ex. company.local
crypto key generate rsa modulus 1024
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Dustin23IT DirectorAuthor Commented:
Yes that is all set as well.
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InteraXCommented:
What IP address are you trying to connect from. Is this on the subnet directly attached to the inside? What subnet mask are you using on the inside?
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Pete LongTechnical ConsultantCommented:
What version of Operating system are you using?

Can you execute the following;

crypto key zeroize rsa
crypto key generate rsa modulus 1024
aaa authentication ssh console LOCAL
username admin password Password123 privilege 15

Then attempt to connect using those credentials


PL
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Dustin23IT DirectorAuthor Commented:
InteraX -

Yes I am trying to connect from the subnet directly connected to the inside interface.  My subnet mask is /24.
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Dustin23IT DirectorAuthor Commented:
Pete -

I am using Win 7 Pro SP1.  SSH authentication is already set, but I will complete the other commands and see what happens.  Thanks!
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