SQLServer 2005 Full text search component reported error while indexing

Earlier today we had an unexpected server restart and since this time the full text crawl log has a lot of errors and the outstanding batches count is growing quite high, currently at 10K+

2015-02-09 14:45:10.46 spid27s     Error '0x80004005' occurred during full- text index population for table or indexed view '[MYDB].[dbo].[FullTextTable]' (table or indexed view ID '1172251281', database ID '6'), full-text key value 0x981EB6385A396244B7AF363247022651. Attempt will be made to reindex it.
2015-02-09 14:45:10.46 spid27s     The component 'DwgFilter.dll' reported error while indexing. Component path 'C:\Program Files\IFilterShop\DwgFilter\DwgFilter.dll'.

2015-02-09 14:45:10.46 spid27s     Error '0xc000014b' occurred during full-text index population for table or indexed view '[MYDB].[dbo].[FullTextTable]' (table or indexed view ID '1172251281', database ID '6'), full-text key value 0xB95B9A61BF969248A64E363247022489. Attempt will be made to reindex it.
2015-02-09 14:45:10.46 spid27s     The component 'thawbrkr.dll' reported error while indexing. Component path 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\thawbrkr.dll'.

Most of these are of the above 2 types. I've tried searching for a solution but for the most part I can't find anything that refers to the above dlls so would appreciate either some pointers or solutions to the issue.

I don't know if these errors were occurring prior to the restart as the logs only start at this time.