All comments and page numbers are for the PDF corrected 6th printing, except page numbers noted for the errata document itself. Some errors are according to the fact that "Entries new to v6.1 are marked with a (1), and can also be found in the New Additions section. All entries not so marked were corrected in the sixth printing." - any such unmarked entries not actually corrected in the PDF corrected 6th printing are noted.
The below notes have been cross-checked against the new 7th corrected printing and v7.0 errata document. Any that were corrected have been removed.
Grammar error:
Page 21, under Protomechs, first paragraph, second sentence currently reads "The pilot rides in a small compartment in the upper chest of the the torso contains the engine, weapons and motive systems." Not sure what the correct sentence(s) should be, but this is clearly incorrect.
Inconsistency:
Total Warfare Errata v7.0, page 3 notes that under Movement Direction, p. 49, under "Backward Movement", third paragraph "VTOL/WiGE Vehicles and submarines," should be changed to "VTOL Vehicles,". The actual text in the PDF corrected 7th printing is "VTOL Vehicles and submarines," so presumably one of these is incorrect - possibly it is the errata document, as the sentence also mentions units expending UMU MP.
Error:
Total Warfare Errata v7.0, page 4 notes that under Jumping, p. 53, under "Water", at the end of the entry a new paragraph should be inserted, but this paragraph is missing.
Change not recorded in errata?
Total Warfare, page 81, under Crashes, after the first sentence, the sentence "If the unit was Out of Control when the crash happened and is a DropShip or larger craft, it is destroyed." seems to have been inserted without being noted in the Errata document. This could be added to the immediately following addition in the same section, "If the unit had no velocity when it crashed, use a value of 2 for the velocity when calculating damage.", which is noted in the Errata document.
Possible issue:
A question involving contradictory rules on whether aerodyne DropShips and small craft can make vertical landings in atmosphere has been removed and posted in the rules question forum instead. Once a ruling has been determined, this will require further errata regardless of the overall ruling, but the nature of the changes will vary depending on the ruling.
Possible issue:
A question involving aerospace unit facing changes on the low-altitude map or ground map has been posted in the rules question forum. This question may end up requiring errata once answered, but that will have to wait until a ruling has been determined.
Error:
Total Warfare Errata v7.0, page 10 notes that under Failed Braking Maneuver Table, p. 87, third effect, second sentence, "the landing gear is destroyed" should be changed to "the landing gear is damaged". In the PDF corrected 7th printing, this text has not been changed as specified.
Error:
Total Warfare Errata v7.0, page 10 notes that under Liftoff, p. 88, second paragraph, second sentence, "A unit cannot lift off if it has a Safe Thrust of 2 or less." should be changed to "A unit must spend 2 Thrust Points to lift off." However, in the PDF corrected 7th printing, this sentence appears to be simply missing, rather than altered as specified.
Error:
Total Warfare Errata v7.0, page 13 notes that under Ammunition Expenditure, p. 104, "Infantry" paragraph, the text should be changed to "Infantry units and vehicles mounting Conventional Infantry Weapons do not need to keep track of ammunition, with the exception of certain battle armor missile attacks (see Battle Armor Attacks, p. 217)." In the PDF corrected 7th printing, this text has not been changed as specified (only infantry units are mentioned, not vehicles).
Error:
Total Warfare Errata v7.0, page 13 notes that under Non-Aerospace Units Attacking Airborne Aerospace Units, p. 107, the entry should be replaced with a new version. This has been implemented in the PDF corrected 7th printing (now located on p. 109 of said PDF due to the rearrangement of the Firing Weapons section), but it contains an error - the final sentence reads "If the attacking unit lies within the airborne aerospace unit’s flightpath, the base range to the target is considered to be 1 hex, plus 2 hexes for each altitude level the aerospace unit is operating at." The italicized text is incorrect and should be removed, although the v7.0 errata document is correct.
Possible error:
Total Warfare Errata v7.0, page 24 notes that under Infernos, p. 141, under "Infantry", the sentence "In neither case is this modified by terrain or infantry type." should be inserted after the first sentence. In the PDF corrected 7th printing, this paragraph has been rearranged, and the sentence has actually been inserted twice - once after the first sentence of the new, rearranged paragraph, and once at the end of the paragraph, which I assume is the correct location (as it places it with the text it was aligned with when applying the errata to the first printing). The first instance of this sentence in the paragraph should be deleted, unless this was intentional.
Inconsistency:
On Total Warfare Errata v7.0, page 31, the note on changes to the Infantry Damage From Attacks Inside Buildings Table, p. 175 does not seem to match the text in the corrected 7th printing. Presumably one of these is incorrect, although the version in the PDF corrected 7th printing seems reasonable, so I suspect the errata document is incorrect.
Error:
Total Warfare Errata v7.0, page 33 notes several changes to text under Frenzy, p. 187. However, out of 3 changes noted, only the 2nd change appears to have been implemented, and the 3rd change as noted in the errata document does not seem fully correct in any case (the text in the PDF corrected 7th printing seems more reasonable).
Error:
Total Warfare Errata v7.0, page 42 notes several changes to text under Dismounting, p. 225. However, the second change involves the "MP Reduction" section, which appears to have simply been removed rather than altered as specified in the PDF corrected 7th printing.
Inconsistency:
Total Warfare Errata v7.0, page 50 notes several changes to text under Hidden Units, p. 259. The text described in the errata document differs fairly significantly from the text actually present in the PDF corrected 7th printing; presumably one of these is incorrect, although it is plausibly the errata document.
Error:
The VTOL Combat Vehicle Critical Hits Table (p. 309) still contains an instance of "Weapon Jam" that should be changed to "Weapon Malfunction" (Rear column, result on a 7).
Error:
The Building Movement Modifier Table (p. 310) is completely missing its headers.
Error:
The Air-To-Ground Attack Modifier Table (p. 312) appears to have had extraneous text ("an additional 8 hexes directly forward.") introduced into its second footnote.
Error:
The Landing Modifiers Table (p. 312), first subtable, fourth line has not been changed to "+1 per point of Velocity above 2" as specified in the errata (p53).