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Hi,

this is strange - it usually works :) Have you tried the following:

• roscd jpl && make clean && make
• rosmake knowrob
• rosrun rosprolog rosprolog ias_knowledge_base ?- jpl_is_true(@(true)). true.

If any of the outputs sounds like an error, please copy/paste the error messages.

HTH,Moritz

Hi,

this is strange - it usually works :) Have you tried the following:

• roscd jpl && make clean && make
• rosmake knowrob

• rosrun rosprolog rosprolog ias_knowledge_base ias_knowledge_base

  ?- jpl_is_true(@(true)). jpl_is_true(@(true)).

  true.

If any of the outputs sounds like an error, please copy/paste the error messages.

HTH,Moritz

Hi,

this is strange - it usually works :) Which operating system and which java version do you use? (java -version)

Have you tried the following:

• roscd jpl && make clean && make
• rosmake knowrob

• rosrun rosprolog rosprolog ias_knowledge_base

  ?- jpl_is_true(@(true)).

  true.

If any of the outputs sounds like an error, please copy/paste the error messages.

HTH,Moritz