Description:   a model may be deemed decomposable even when it is not.
Affected versions:   3.6.0 to 3.6.9,  4.0.0 to 4.0.4
Status:   fixed (3.6.10), to be fixed (4.0.5)
Found/reported by:   , on 2024-07-
Remarks:   seems to occur rarely

Description:   there is a problem with <command_data>.
Affected versions:   4.0.0 to 4.0.4
Status:   to be fixed (4.0.5)
Found/reported by:   author, on 2024-07-26

Description:   the diagrams generation is often cut short if the config option noinfo is used, and some output is displayed nonetheless.
Affected versions:   4.0.0 to 4.0.4
Status:   to be fixed (4.0.5)
Found/reported by:   author, on 2024-07-22

Description:   there is a problem with <full_time> and <raw_time>.
Affected versions:   4.0.0 to 4.0.3
Status:   fixed (4.0.4)
Found/reported by:   author, on 2024-07-11

Description:   the internal momenta are not always computed.
Affected versions:   4.0.0 to 4.0.3
Status:   fixed (4.0.4)
Found/reported by:   author, on 2024-07-03

Description:   the style-keyword <index_offset> is not working correctly.
Affected versions:   4.0.2 ,  4.0.3
Status:   fixed (4.0.4)
Found/reported by:   author, on 2024-07-02

Description:   there is a problem with vsum.
Affected versions:   3.5.0 to 3.5.2 ,  3.6.0 to 3.6.8 ,  4.0.0 to 4.0.2
Status:   fixed (3.5.3 ,  3.6.9 ,  4.0.3)
Found/reported by:   a user, on 2024-06-26
Remarks:   the presence of ‘duplicate’ vertices seems to be necessary for the problem to occur.

Description:   the option topol is not active.
Affected versions:   4.0.0 ,  4.0.1
Status:   fixed (4.0.2)
Found/reported by:   author, on 2024-06-17
Remarks:   the option new_topology can be used instead.

Description:   there is a problem with reading function values.
Affected versions:   4.0.0
Status:   fixed (4.0.1)
Found/reported by:   author, on 2024-05-28

Description:   there is a problem for large vertex degrees ( > 10 ).
Affected versions:   3.6.0 to 3.6.7
Status:   fixed (3.6.8)
Found/reported by:   a user, on 2024-02-09
Remarks:   as noted in the manual, changing the value of the internal parameters is not advisable.

Description:   the ability to use unencoded rationals (in model-files) is broken.
Affected versions:   3.5.0 to 3.5.2 ,  3.6.0 to 3.6.6
Status:   fixed (3.6.7)
Found/reported by:   author, on 2023-12-16

Description:   the ability to use character strings with apostrophes (even before encoding) is broken.
Affected versions:   3.5.0 to 3.5.2 ,  3.6.0 to 3.6.6
Status:   fixed (3.6.7)
Found/reported by:   author, on 2023-11-14
Remarks:   for example, the encoded string 'a''s' (unencoded, a's) generates an error.

Description:   some fragmentary information can be displayed when config option noinfo is used.
Affected versions:   3.6.4 to 3.6.6
Status:   fixed (3.6.7)
Found/reported by:   author, on 2023-11-03

Description:   the program may terminate abruptly with error trm_1 .
Affected versions:   3.6.0 to 3.6.5
Status:   fixed (3.6.6)
Found/reported by:   a user, on 2023-05-04

Description:   the extended loops statement may disrupt the internal diagrammatic options.
Affected versions:   3.6.4
Status:   fixed (3.6.5)
Found/reported by:   author, on 2022-09-30

Description:   ‘improved’ psum may discard too many diagrams.
Affected versions:   3.6.0 to 3.6.3
Status:   fixed (3.6.4)
Found/reported by:   author, on 2022-09-09

Description:   the computation of the internal momenta may be omitted in some multiple-output instances.
Affected versions:   3.5.0 ,  3.5.1 ,  3.6.0 to 3.6.2
Status:   fixed (3.5.2 and 3.6.3)
Found/reported by:   author, on 2022-06-05

Description:   the ability to define the external momenta is broken.
Affected versions:   3.6.0 to 3.6.2
Status:   fixed (3.6.3)
Found/reported by:   author, on 2022-06-04

Description:   the index_offset statement cannot appear before the partition statement.
Affected versions:   3.6.0 to 3.6.2
Status:   fixed (3.6.3)
Found/reported by:   author, on 2022-05

Description:   some models can be erroneoulsy classified as decomposable, and then the diagram generation may be skipped.
Affected versions:   3.6.0 ,  3.6.1
Status:   fixed (3.6.2)
Found/reported by:   a user, on 2022-05-10
Remarks:   not completely fixed in 3.6.2 , only in 3.6.10

Description:   user-defined model-constants are not processed correctly, and the program may crash.
Affected versions:   3.6.0
Status:   fixed (3.6.1)
Found/reported by:   author, on 2022-04-28

Description:   an error message that should point to the model-file points to some other file instead.
Affected versions:   3.5.0
Status:   fixed (3.5.1)
Found/reported by:   author, on 2022-03-12

Description:   forbidden characters (mainly Tab) are not detected in input files.
Affected versions:   3.4 to 3.4.2
Status:   fixed (3.5.0)
Found/reported by:   a user, on 2021-05-27
Remarks:   version 3.4 will likely not be patched, but things are back to normal with version 3.5.

Description:   the case where there is at least one field which does not appear in any vertex is treated incorrectly.
Affected versions:   0.5
Status:   fixed (0.6)
Found/reported by:   author, on 2018-06-05
Remarks:   this anomalous case may be unlikely to appear in practice, but...