Error code 5 when running importprivkey

[sloopy]

I am fairly new to wallets. I started playing with them in January on windows machines and over the last month began compiling on Kubuntu. I like Ubuntu / Kubuntu / Linux much better than windows and would prefer to do everything there, but that is another topic.

I have some private keys I purchased from someone. (I understand the potential issues with this regarding my funds being stolen, again, another topic)
These are not bitcoin wallets, they are altcoin, but from my searches I do not think it matters relative to my question.

The first private key I received would constantly give me error code 5 when I attempted to import it. importprivkey theactualkey | The "Dev" tells me I am typing in something wrong. I checked it at least a dozen times. After searching and trying a million things I found I had successfully imported the key, but had not given it a label. I did a listaccounts and could see it. Error 5 went away and I started getting error 4. I figured that one out pretty quick. The problem is I wasn't sure what I actually did to solve the error code 5.

I received a second private key for a different wallet and boom, same issue. Error code 5.
Dev again tells me I must be entering something incorrectly. I have checked it again and I am confident I am typing it in correctly.
I tried a new wallet.dat without the wallet being encrypted.
Then I tried encrypting the wallet, and unlocking it compeltely and then entering the importprivkey actualkey label

Google searches show a tremendous amount of methods for troubleshooting error code 5.
Is there a document or web location which shows the actual explanations from whoever setup these error codes and exactly what they mean?

One answer I found about error code 5  talks about the password needing to be in SHA256 format and using a python script to convert it, etc, but I want to know what you Pros think.

I appreciate your help

[cr1776]

What wallet is this?  Bitcoin Core seems less likely since you are talking about "The Dev."  But could be Bitcoin Core and something. More details would be useful to know: what software, versions etc you are using.  ;-)

[sloopy]

What wallet is this?  Bitcoin Core seems less likely since you are talking about "The Dev."  But could be Bitcoin Core and something. More details would be useful to know: what software, versions etc you are using.  ;-)

As I mentioned these are not Bitcoin wallets, but are alts built from bitcoin QT wallet source.
The error code 5 message should be a standard error from the QT base. Just like error 4.

[cr1776]

What wallet is this?  Bitcoin Core seems less likely since you are talking about "The Dev."  But could be Bitcoin Core and something. More details would be useful to know: what software, versions etc you are using.  ;-)

As I mentioned these are not Bitcoin wallets, but are alts built from bitcoin QT wallet source.
The error code 5 message should be a standard error from the QT base. Just like error 4.

You will probably want to ask in (or move this to) the alt-coin section that is appropriate for it then.

I couldn't tell if it was built from bitcoin QT source or not.  Are they built from 0.10.1?  What alt-coin? 

[sloopy]

I was typing in the last letter of the key lowercase rather than uppercase.
I had given myself some kind of mental block and must have been rushing when I checked it.
I came back to post and own up to my fool self and maybe the next time someone like me reads about erro code 5 they will get someone else to check it for them

Thank You for the reply

My time spent was not a waste. I learned a lot about BIP38 and hashing the password I didn't know

[cr1776]

Great! Glad you got it fixed!