Man warnings preg_match(): Compilation failed

[Heart1010]

When I run the script the outputs has many warnings in it...

.PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2910
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2950
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 2977
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3004
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 7 in /var/www/virtual/domain.vsrv123456.customer.vlinux.de/htdocs/administrator/components/com_k2/lib/class.upload.php on line 3022
File: 3abb66d58aa91d2b7b16f08ee38a95c0.jpg SUCCESSFUL

[maxgdias]

Same issue for me.
Any idea to solve this?