Use electrum for this.

This is likely a hardware error. Bitcoin Core is very hardware intensive so it could be causing the crashes from working the hardware to hard. The only solution is to either upgrade your hardware or switch to use another wallet.

These crashes likely indicate that you have some faulty hardware.

That should be right.

Your welcome    I think your problem earlier was using a Mac 

That guy in the email isn't a core dev. He is just proposing something, which in all likelihood is probably going to be rejected.

It will work automatically. All you need to do is replace the wallet.dat in the data directory with yours. If it doesn't show the correct balance then you will need to have Bitcoin Core rescan the blockchain, but this does not involve resyncing or redownloading anything. It is usually fairly quick. Normally you won't need to do that.

IIRC Ledger is a BIP39 compatible wallet, so the recovery words that you write down will be able to be imported into any BIP39 compatible wallet. Then you can spend the Bitcoin from that imported wallet.

I'm not sure what is wrong. Submit a bug report and the developers should help you. Go to Help > Submit Bug Report and follow the instructions.

Oh. I think I see the problem now. Earlier I assumed you hadn't run Bitcoin Core yet so the data directory wasn't created. However that does not appear to be the case. You need to put the wallet.dat file in the data directory, which by default should be in %Appdata%/Bitcoin unless you changed it. If you don't know where it is, just search in the file explorer for "Bitcoin" You should find a folder with a few other folders within it. It should have "blocks" and "chainstate" folder as well as a wallet.dat file and a debug.log file. If you find that folder, replace the wallet.dat in their with your own.

Armory has better multisig support and it uses Heirarchical Deterministic wallets so that you only need one backup ever to backup all of the private keys in your wallet. It also supports having multiple wallets and watching only wallets.

Heh. Thanks!

Not sure. Have you tried simply restarting the program or the computer?

You cannot send Bitcoin from a watch only wallet. A watch only wallet does not contain the private keys which are necessary for signing transactions. Without the private keys your transaction will not be valid. When you click Continue it should have another window pop up somewhere with the transaction for Offline Signing. Are you sure that that window doesn't pop up anywhere?

Also what version of Armory are you using?

The hash is the hash of the redeem script encoded as hex bytes. You can build a script using the ScriptBuilder class and then get the bytes of the script and perform the sha256 and ripemd160 hashes on those bytes to get the hash.

That would be because the folder doesn't exist. Open the file explorer and in the bar on top type %appadata% then hit enter. In the folder it takes you to, there should be a folder named Bitcoin. If it isn't there, create the folder. Make sure you use a capital B. If the folder is there, open it. Once in the folder, copy the wallet.dat file there and then start Bitcoin Core.

A private key is a large random number which only one party should own. By combining the private key with the hash of the data and doing some other functions on that, a signature is created. A signature can then be verified by performing some other operations on the given message and signature to return with a public key which corresponds to the private key.

A signature consists of two large integers which are determined by the hash of the message and the private key. It comes from the software that generated it. Here is some info on signatures: https://en.wikipedia.org/wiki/Digital_signature

The blockchain is not an entity. What happens is that the owner of the private key signs the unsigned transaction and the signature is then embedded into the transaction when it is sent.

Kind of, they aren't really orders. Transactions consist of an input which corresponds to an outpoint, the output of another transaction before it. It then creates outputs that can be spent.

Outputs are technically scripts. A script is essentially a program. In order to properly spend an output, the script of the input combined with the script of the corresponding output has to validate. After completing all of the commands in the script, the output of the program must be true (not 0) in order to validate. While there is a "normal" script used in outputs, an output can have all sorts of scripts, and the input that spends it must validate to true.

See above.

The scripts will be executed to validate a transaction. If it comes out false, the transaction is not valid. If it is true, the transaction is valid and is continued to be broadcast and can be included in blocks.

There are no specific requirements. See above.

That pretty much defeats the purpose of a brain wallet. Most people aren't going to use randomly generated words, and those who do probably aren't going to remember the randomly generated word very well.

Not really. The recovery seed is the reverse of a brain wallet. It takes a randomly generated number (the master private key) and encodes that as words. Brain wallets take a word (which may or may not be randomly generated) and encode that as a number (private key). The difference is that it is easier to guess the words to a brainwallet than it is to guess the words to a recovery seed.

You can download and install Bitcoin Core again which should be able to read that file. If it can't, then you can download an older version that can. Another option is to use a tool like pywallet which can dump the private keys from the wallet.dat file so that you can import them into another wallet and spend the Bitcoin.

You generally aren't supposed to open .dat files. Those are data files and their formats differ depending on the software the created it. Generally you use hex editors to open those files.

Technically that is not what happens. But for a high level explanation, it is okay.

What happens is the exact same thing that happens when you trade Bitcoin (or any currency) for any good (e.g a fiat currency). You transact some Bitcoin to another person who transactions some fiat to you. Blockchain records nothing except that Bitcoin went from one address to another. Only those involved in that trade will know that another transaction happened in another currency to transfer some fiat from the other guy to you.