samuel.thomas.blake@gmail.com wrote:   
   >   
   > Here's an example which generates an interesting error message in FriCAS.   
   >   
   > (4) -> integrate(((-1+x^6)*(1+2*x^3+x^6)^(-1/3))/(1+x^6),x)   
   >   
   >    >> Error detected within library code:   
   >    impossible   
   >   
      
   Again, as Nasser wrote this is fixed in current version.  If you   
   really do not want to go into trouble of installing 1.3.6 you   
   can try web interface at:   
      
   fricas-wiki.math.uni.wroc.pl   
      
   Also, you can fetch 'intalg.spad' from FriCAS 1.3.2 or FriCAS 1.3.3.   
   If you type:   
      
   )compile intalg.spad   
      
   in 1.2.6 command line this will replace algebraic integrator by the   
   one from newer version.  1.3.2 contains most of bugfixes relevant to   
   your problems and changes are small enough that it will work in 1.2.6   
   (later versions contain incompatible changes).   
      
   Note: this will not touch your existing installation.  In fact, the   
   change will be only to running copy of FriCAS.  When you restart   
   FriCAS you will be back to 1.2.6 behaviour.  If you want to use   
   this multiple time after restart it is enouch to do   
      
   )lib INTALG   
      
   (this loads previously compiled code).  Or if you want to make   
   permanent change you can copy INTALG.NRLIB/INTALG.fasl into FriCAS   
   installation (.../lib/fricas/target/x86_64.../algebra/INTALG.fasl).   
      
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