java.util.ConcurrentModificationException

[l.g.]

When I call CMP Entity Bean method findByIdRange(to, from)

<query-method>
<method-name>findByIdRange</method-name>
<method-params>
<method-param>int</method-param>
<method-param>int</method-param>
</method-params>
</query-method>

<ejb-ql>[CDATA[
SELECT OBJECT (ic)
FROM InvestmentCompany ic
WHERE ic.investmentCompanyId >= ?1 AND ic.investmentCompanyId < ?2
]]
</ejb-ql>

from SFSB I get java.util.ConcurrentModificationException.
Any idea why?
Env: jboss-3.0.1, sun jdk-1.4, RedHat 7.3, Oracle7

TIA

[l.g.]

Never mind... just my mistake.