Could not load Custom Database ... DB seems to be corrupted and should be deleted and re-imported

I am experiencing a database error when trying to implement a custom database search.

The attached test fails with the following error:

SEVERE  11:40:46 - Could not load Custom Database 'db3'. DB seems to be corrupted and should be deleted and re-imported
java.io.IOException: Custom database 'db3' not found.
    at de.unijena.bioinf.chemdb.RestWithCustomDatabase.getCustomDb(RestWithCustomDatabase.java:209)
    at de.unijena.bioinf.chemdb.RestWithCustomDatabase.loadCompoundsByFormula(RestWithCustomDatabase.java:189)
    at de.unijena.bioinf.fingerid.FormulaJob.lambda$compute$0(FormulaJob.java:57)
    at de.unijena.bioinf.utils.NetUtils.tryAndWait(NetUtils.java:72)
    at de.unijena.bioinf.utils.NetUtils.tryAndWait(NetUtils.java:64)
    at de.unijena.bioinf.fingerid.FormulaJob.compute(FormulaJob.java:56)
    at de.unijena.bioinf.fingerid.FormulaJob.compute(FormulaJob.java:36)
    at de.unijena.bioinf.jjobs.BasicJJob.call(BasicJJob.java:120)
    at de.unijena.bioinf.jjobs.BatchJJob.compute(BatchJJob.java:28)
    at de.unijena.bioinf.jjobs.BatchJJob.compute(BatchJJob.java:9)
    at de.unijena.bioinf.jjobs.BasicJJob.call(BasicJJob.java:120)
    at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.base/java.lang.Thread.run(Unknown Source)


#!/usr/bin/env bash

# This test works 
mkdir test1
cd test1
echo "CN1CCCC1C2=C[N+](=CC=C2)[O-]  id-01   Nicotin
CN1C=NC2=C1C(=O)N(C(=O)N2C)C    id-03   Caffein
CN1CCC2=CC3=C(C=C2C1C4C5=C(C6=C(C=C5)OCO6)C(=O)O4)OCO3 id-05 Bicculine" > candidates1.tsv

echo ">compound test1
>formula C8H10N4O2
>ionization [M+H]+
>parentmass 195.0877
>ms2
138.0661 3.693034
195.0877 100.000000" > test1.ms

sirius -i candidates1.tsv custom-db --output . --name db1
sirius -i test1.ms -o sirius_rst1 formula structure --database ./db1

cd ..

# ...this test also works 
mkdir test2
cp test1/test1.ms test2/test2.ms
cd test2

echo "NC(=O)c1ccc([N+](=O)[O-])cc1  ZESWUEBPRPGMTP  name1
NC(=O)c1cccc([N+](=O)[O-])c1    KWAYEPXDGHYGRW  name2
NC(=O)c1ccccc1[N+](=O)[O-]  KLGQWSOYKYFBTR  name3
COc1ccc2no[n+]([O-])c2c1    XCWFKHHSXPIDHN  name4
O=[N+]([O-])c1ccc(C=NO)cc1  WTLPAVBACRIHHC  name5
O=[N+]([O-])c1cccc(C=NO)c1  GQMMRLBWXCGBEV  name6
O=CNc1ccc([N+](=O)[O-])cc1  ZTCQFVRINYOPOH  name7" > candidates2.tsv

sirius -i candidates2.tsv custom-db --output . --name db2
sirius -i test2.ms -o sirius_rst2 formula structure --database ./db2

cd ..

# ...but this one fails 
mkdir test3
cp ./test2/candidates2.tsv ./test3/candidates3.tsv
cd test3
echo ">compound test3
>formula C7H6N2O3
>ionization [M+H]+
>parentmass 167.0451
>ms2 
  50.0153   332681.1
  51.0232  1177739.8
  52.0184    26185.3
   76.031    22813.9
  78.0338  1824839.5
  81.0335    18824.8
  92.0257    74763.5
  96.0444    41429.5
 120.0205    23742.8
 150.0186   14099669" > test3.ms

sirius -i candidates3.tsv custom-db --output . --name db3
sirius -i test3.ms -o sirius_rst3 formula structure --database ./db3

sirius-ms / sirius

Could not load Custom Database ... DB seems to be corrupted and should be deleted and re-imported #44