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Bitcointalk's search is slow, and difficult to get the results you need, because you need to log in first to find anything useful - furthermore, there are rate limiters for their search functionality.
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your personal data, therefore, will never be in jeopardy since we are not asking for any of your data and you don't need to provide them to use our site with all of its capabilities.
We created this website with the sole purpose of users being able to search quickly and efficiently in the field of cryptocurrency
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I've run into the same problem. Backup your wallet.dat if you haven't already. Try removing the "old" wallet and try again. If that doesn't work it means it is the database. If it is the database, you would need to remove the database folder and blk*.dat files and redownload the chain.
I haven't been able to figure it out yet. Trying to narrow it down myself.