Here are my latest test results from running Demolition http://www.ecs.soton.ac.uk/~njl98r/code/ladspa/demolition.html 237 plugins were tested from 117 plug-in libraries, including all the ones in BLOP, CMT, SWH, MCP and REV. I'm disappointed to see that demolition has not been used to improve the quality of LADSPA plugins. This post is a metaphorical stick, since the carrot has not worked. If you see a plugin you like here, make sure the maintainer fixes it. So without further ado here are the error reports. Matthias Nagorni vcf_cv_in.so / vcf.so UniqueIDs 1729, 1728, 1723, 1721 ERROR: set_run_adding_gain() implemented without run_adding() Matthias also re-uses UniqueIDs for CV and non-CV variants of the same plugin - with correspondingly different numbers of ports - which is probably going to cause some strange crashes in some LADSPA hosts. Mike Rawes <mike_rawes[at]yahoo.co.uk> triangle_1649.so square_1643.so sawtooth_1641.so random_1661.so fmod_1656.so lp4pole_1671.so pulse_1645.so (all plugins in each library) ERROR: port 0 is LOGARITHMIC but LowerBound isn't positive Fons Adriaensen &lt;fons.adriaensen(a)alcatel.be&gt; mvclpf24.so cs_phaser.so (all plugins in each library) ERROR: Label contains illegal white-space character Steve Harris &lt;steve(a)plugin.org.uk&gt; retro_flange_1208.so multivoice_chorus_1201.so ERROR: Floating point exception [Arguably acceptable for bogus input...] Alexander Ehlert &lt;mag(a)glame.de&gt; notch_iir_1894.so lowpass_iir_1891.so highpass_iir_1890.so bandpass_iir_1892.so bandpass_a_iir_1893.so ERROR: Segfault [Accesses invalid memory pointer when cleanup is called] Andy Wingo <wingo at pobox dot com> delay_1898.so comb_1887.so allpass_1895.so (all plugins in each library) ERROR: Segfault Jesse Chappell SooperLooper.so ERROR: port 1 is LOGARITHMIC but LowerBound isn't positive ERROR: port 2 is LOGARITHMIC but LowerBound isn't positive Richard W.E. Furse cmt.so 83 errors reported in total, some examples listed.. # UniqueID = 1069 ERROR: port 0 is LOGARITHMIC but LowerBound isn't positive # UniqueID = 1092 ERROR: unwritten output port 8 ERROR: unwritten output port 9 ERROR: unwritten output port 10 ERROR: unwritten output port 11 # UniqueID = 1080 ERROR: port 2 has DEFAULT_MAXIMUM without BOUNDED_ABOVE # UniqueID = 1225 ERROR: Segfault