[Dovecot] v2.0.9 -segfault in lib21_fts_solr_plugin.so

[G.Nau]

After installing dovecot 2.0.8 (just updated to 2.0.9) I installed the
fts plugin 2.0.9 and get several seconds after reloading dovecot segfaults.

Jan 16 12:43:04 lin kernel: [601979.190764] imap[13313]: segfault at 18
ip 00007f5094cd99d6 sp 00007fffb10e96a0 error 4 in
lib21_fts_solr_plugin.so[7f5094cd6000+7000]
Jan 16 12:43:04 lin kernel: [601979.404712] imap[13315]: segfault at 18
ip 00007ff1f248a9d6 sp 00007fff500b0a90 error 4 in
lib21_fts_solr_plugin.so[7ff1f2487000+7000]
Jan 16 12:43:04 lin kernel: [601979.628830] imap[13317]: segfault at 18
ip 00007f4b5a2809d6 sp 00007fff8d012260 error 4 in
lib21_fts_solr_plugin.so[7f4b5a27d000+7000]
Jan 16 12:45:30 lin kernel: [602124.948358] show_signal_msg: 6 callbacks
suppressed
Jan 16 12:45:30 lin kernel: [602124.948369] imap[13960]: segfault at 18
ip 00007fa4f92ea9d6 sp 00007fff65212ee0 error 4 in
lib21_fts_solr_plugin.so[7fa4f92e7000+7000]
Jan 16 12:45:30 lin kernel: [602125.167202] imap[13962]: segfault at 18
ip 00007f07a1a8d9d6 sp 00007fff3183cb10 error 4 in
lib21_fts_solr_plugin.so[7f07a1a8a000+7000]

Regards
  Gunther