[Solved] Reddcoin 3.10.3 core crashes: !"cannot load block from disk"

[Geebee]

My Reddcoin wallet worked fine for years, running 24x7 to keep staking. Now on v3.10.3.0-00eedb8-beta (64-bit). But last weeks it keeps crashing:

Assertion failed!
[path]…reddcoin-qt.exe
File: main.cpp, Line 3837
Expression: !“cannot load block from disk”

I already rebuilt with the bootstrap files, but now always a few hours after starting up the app crashes with this error message.

Any clues how to fix this?

[yavuz_selim]

First time I’m seeing that error. Reading the error and searching some on the internet, I think the issue might be related to your hard drive.

I would recommend to check the health of your drive.

You can use CrystalDiskInfo, for example.
A portable version (works without installing): https://portableapps.com/apps/utilities/crystaldiskinfo_portable.

Can you run that software and post a screenshot of the results?

[Geebee]

Thank you, here the screenshot. Looks good i guess. Also my ‘Hard Disk Sentinel Pro’ utility does not signal any errors.

[yavuz_selim]

Is your blockchain data saved on D: or E:?

By default, it’s stored on C:.

Can you also post a screenshot of C:?

[Geebee]

Program and data all on D:

[yavuz_selim]

Hm…

You already have deleted existing blockchain data and bootstrapped. That’s what I would do as well. That doesn’t seem to have fixed the issue…

In your case, I would try the following myself:

• Exit/close Reddcoin Core, make sure it’s not running.
• Copy the current Reddcoin data directory to another partition on another drive. In your case, I would go for F: or G:.
• Start Reddcoin Core with -choosedatadir, and use the new location (on F: or G:).

Then, I would monitor if Reddcoin Core still gives an error.
If there is no error, the disk would seem to be the issue.
If it does give an erorr, I will ask you about how you have done the bootstrapping, to make sure you haven’t missed anything.

[Geebee]

Ok, will try. Reddcoin data and Redcoin core are in 1 directory on D. Can I copy the whole folder to another drive then? Do I still have to use -choosdatadir?

Or should I only move the /blocks and /chainstate folders to another disk and restart with -choosedatadir?

[yavuz_selim]

I can give you the exact instructions, but I need to know if we talk about the same thing.

• Reddcoin installation/program directory:
  Contains the wallet software - Reddcoin Core.

• Reddcoin data directory:
  Contains the blockchain data and your wallet file, and other necessary files.

 

Can you post the location of these 2 directories? And a screenshot of the content (so I can see/verify it’s the correct folder).

 
 

• Don’t move anything, but copy.
• You only need to copy your Reddcoin data directory (contains your blockchain folders).
• You need to start with -choosedatadir to make sure Reddcoin Core uses the new location.

I will tell you exactly how to the steps, but first I need to know the locations.

[Geebee]

All is in 1 directory on D:

[yavuz_selim]

Okay, current location is: D:\Reddcoin.

• Copy the Reddcoin folder on D: to F:.

• So, the new location is: F:\Reddcoin.

• Start Reddcoin Core with the -choosedatadit parameter/argument.

  • Press Windows key + R.
    The ‘Run’ window should open.
     
    In Run, enter this (copy/paste):
    "F:\Reddcoin\reddcoin-qt.exe" -choosedatadir
     

• Reddcoin Core will start (from the new location). It will ask you for the data directory.
  → Select F:\Reddcoin as your data directory.

 

Check if this solves your issue…

[Geebee]

I chose H, a healthy SSD drive…

Done, up and running now, will let you know, thanks a lot!

[yavuz_selim]

And? Had any issues since running Reddcoin Core on H:?

[Geebee]

Hi! All running fine now on H! I guess you were right about the disk. Very strange that 2 disk-checkers do not notice this :-(. Thanks for your help!.

[yavuz_selim]

I would recommend you to backup the data on the drive with possible issues.

Glad Reddcoin Core works without issues on H:.