Error while updating Instance

[Michel Esber]

DB21085I Instance "db2inst1" uses "32" bits and DB2 code release
"SQL08026" with level identifier "03070106".
Informational tokens are "DB2 v8.1.2.120", "s060801", "MI00163", and
FixPak "13".
Product is installed at "/opt/IBM/db2/V8.1".

After ./installFixPak -y

[root@clinux ~]# /opt/IBM/db2/V8.1/instance/db2iupdt db2inst1
/opt/IBM/db2/V8.1/instance/db2idefs: line 185:
/root/sqllib/bin/db2langdir: No such file or directory
/opt/IBM/db2/V8.1/instance/db2idefs: line 212:
/root/sqllib/bin/db2langdir: No such file or directory
/opt/IBM/db2/V8.1/instance/db2idefs: line 185:
/root/sqllib/bin/db2langdir: No such file or directory
/opt/IBM/db2/V8.1/instance/db2idefs: line 212:
/root/sqllib/bin/db2langdir: No such file or directory
DBI1070I Program db2iupdt completed successfully.

The error seems to be here::

181 if [ -n "${DB2INSTANCE}" ]; then
182 rundb2langdir=${HOME?}/sqllib/bin
183 fi

[root@clinux ~]# echo $DB2INSTANCE
db2inst1

Before this IF block, rundb2langdir is correct. After the block, it
points to /root/sqllib/bin ...

I´ve never had this problem on previous Fixpacks.

Anyone else having this issue?

Thanks in Advance.