Dear Christian,
I am checked with current basex version,here also facing same issue.

org.basex.core.BaseXException: Improper use? Potential bug? Your feedback is welcome:
Contact: basex-talk@mailman.uni-konstanz.de
Version: BaseX 9.2.4
Java: Oracle Corporation, 1.8.0_191
OS: Windows 7, amd64
Stack Trace:
java.lang.RuntimeException: Data Access out of bounds:
- pre value: 2145081503
- table size: -2125386907
- first/next pre value: -2125387008/-2125386907
- #total/used pages: 8474924/8474924
- accessed page: 8474923 (8474924 > 8474923]
at org.basex.util.Util.notExpected(Util.java:61)



Regards,
Chandrasekhar


On Tue, Aug 13, 2019 at 12:49 PM Christian Grün <christian.gruen@gmail.com> wrote:
Dear Chandrasekhar,

I am sorry we cannot provide free support and bug fixes for older versions via the mailing list. However, you could set up a little test instance with the latest version of BaseX in order to check if the error still persists.

Best,
Christian



chandra Sekhar <vcsred@gmail.com> schrieb am Di., 13. Aug. 2019, 09:13:
Dear Team,
Not checked,because of basex9 will work with java8 but in our production environment we are using java7 it is very difficult for us change to java8

Regards,
Chandrasekhar

On Tue, Aug 13, 2019 at 12:37 PM Christian Grün <christian.gruen@gmail.com> wrote:
Does the error occur with BaseX 9, too?


chandra Sekhar <vcsred@gmail.com> schrieb am Di., 13. Aug. 2019, 07:29:
Dear Basex Team,
We are getting below error while adding xml's to collection.Please let us know any solution for this error

Exception ::org.basex.core.BaseXException: Improper use? Potential bug? Your feedback is welcome:
Contact: basex-talk@mailman.uni-konstanz.de
Version: BaseX 7.9
Java: Oracle Corporation, 1.7.0_79
OS: Linux, amd64
Stack Trace:
java.lang.RuntimeException: Insertion at beginning of populated table.
at org.basex.util.Util.notExpected(Util.java:53)
at org.basex.io.random.TableDiskAccess.insert(TableDiskAccess.java:371)
at org.basex.data.Data.insert(Data.java:901)
at org.basex.data.Data.insert(Data.java:710)
at org.basex.core.cmd.Add.run(Add.java:103)
at org.basex.core.Command.run(Command.java:329)
at org.basex.core.Command.execute(Command.java:94)
at org.basex.core.Command.execute(Command.java:117)
at org.basex.server.ClientListener.execute(ClientListener.java:384)
at org.basex.server.ClientListener.add(ClientListener.java:355)
at org.basex.server.ClientListener.run(ClientListener.java:100)


Regards,
Chandrasekhar