I ran diamond blastx with -f 100 flag, and apparently it ran correctly, as queries were aligned. When meganizing the daa file in MEGAN Comm. Edition 6.24.23, the ´Annotating references´ works, the ´Writing´ starts but then stops:
Annotating DAA file using FAST mode (accession database and first accession per line)
Error: null
null
Info: Finished meganizing 1 files. ERRORS: 1
Info: Command completed (424s): meganize …